Intermediate algebra everyday explorations 5th edition kaseberg test bank

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Intermediate algebra everyday explorations 5th edition kaseberg test bank

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1 Using the table, determine f  –5  x 4 f  x   x + 3x + 3 2 1 0 12 20 A) B) C) D) E) 30 42 20 12 Find the x-intercepts of the parabola: A) (3,0), (–2,0) B) (3,0) C) (0,–3), (0,3) D) (–3,0), (3,0) E) (0,–3), (–3,0) y  x  36 Page Using the graph, find the y-intercept point A) B) C) D) E) (4, 0) (0, 4) (3, 1) (1, 3) no y-intercept Using the graph, find the equation for the axis of symmetry A) B) C) D) E) y=3 y=4 x=1 x=4 x=0 Page Using the graph, find the vertex A) B) C) D) E) (1, 4) (4, 0) (0, 4) (3, 1) (1, 3) Find the minimum or maximum of the quadratic function: y  x  10 x  10 A) Minimum: –15 B) Minimum: 35 C) Minimum: D) Minimum: 15 E) Maximum: –17 Find the x-intercepts of the parabola: A) (4,0), (–3,0) B) (4,0) C) (0,–4), (0,4) D) (–4,0), (4,0) E) (0,–4), (–4,0) y  x  64 Page Using the graph, find the equation for the axis of symmetry A) B) C) D) E) x=1 y=3 y=1 y= x= Page Find the vertex and axis of symmetry, and then graph the parabola given by: y  –2 x + x A) Vertex: ( , ) ; 2 Axis of symmetry: x = B) –25 Vertex: ( , ); Axis of symmetry: x = C) –9 Vertex: ( , ); Axis of symmetry: x = Page 10 Using the graph, find the vertex A) B) C) D) E)  1  3,   2 1   , 3 2  1   0,  2    2 , 0   1, 3 Page 11 Find the minimum or maximum of the quadratic function: y  x2  8x A) Minimum: –4 B) Minimum: –1 C) Minimum: 12 D) Minimum: E) Minimum: –3 12 Find the x-intercepts of the parabola: A) (3,0), (5,0) B) (3, 5) C) (0,–3), (5, 0) D) (–3,0), (5, 0) E) (0,–3), (0,5) y  x  x  15 13 Using a table and graph, find the equation for the axis of symmetry f  x    x2 – 6x – A) y = –3 B) y = C) y = –4 D) x = –3 E) x = Page 14 Find the vertex and axis of symmetry, and then graph the parabola given by: y  – x2 + x – A) Vertex: (1, –2); Axis of symmetry: x = B) Vertex: (2, –1); Axis of symmetry: x = C) Vertex: (1, –1); Axis of symmetry: x = Page 15 Find the vertex of the following equation f  x    x + x – 10 A)  0, –10  B) C) D) E)  –10,   2, –   –6,   –6, –10  16 Find the minimum or maximum of the quadratic function: y  9 x  x  A) Maximum: –7 B) Maximum: C) Maximum: D) Maximum: –9 E) Minimum: 17 Find the x-intercepts of the parabola: A) 3  (2,0),  ,  8  B)    2,   8 C) 3  (0,–2),  ,  8  D) 3  (–2,0),  ,  8  E)  3 (0,–2),  0,   8 y  8x  13x  18 The vertex of a parabola is (–7, –1) and opens upward What is the equation of the axis of symmetry of the parabola? A) y = –1 B) x = C) x = –7 D) y = E) x = –1 Page 19 Find the minimum or maximum of the quadratic function: y  5 x  10 x  A) Maximum: B) Maximum: C) Maximum: D) Maximum: –4 E) Minimum: –5 20 Physics: The height, s, in feet, of a rock thrown upward at an initial speed of 76 ft/s from a cliff 40 ft above the ocean beach is given by the function s(t )  16t  76t  40, where t is the time in seconds Find the maximum height above the beach that the rock will attain A) 130.25 ft B) 2.4 ft C) 130 ft D) 139.25 ft E) 122.25 ft 21 Use first and second differences to find out whether each sequence may be described with a linear function, a quadratic function, or neither Use the table method to fit a linear or quadratic equation 1, 8, 11, 37, 640 , A) linear; y  x  B) quadratic; y  x C) quadratic; y  x  D) linear; y  x E) neither Page 10 48 Multiply:  5a   a  3 A) 5a –13a  B) 5a +13a  C) 5a  2a  D) 5a –13a  E) 5a +13a  49 Multiply:  y   y  3 A) y +14 y  B) y –14 y  C) y  y  D) y +14 y  E) y –14 y  50 Multiply:  y  3 y  3 A) 21y – y  B) C) D) E) 21y – 30 y  21y + 30 y  21y – 30 y  21y – y  51 Multiply:  2a  2b  a  6b  A) 2a +10ab  12b B) 2a –10ab  12b C) 2a + 2ab  12b D) 2a –10ab  12b E) 2a – 12ab  12b Page 18 52 Multiply: 3(3 x  y )(3 x  y ) A) 27 x  27 xy  30 y B) x  xy  10 y C) 27 x  27 xy  30 y D) 27 x  27 xy  30 y E) x  xy  10 y 53 Multiply: ( xy  9)( xy  4) A) x y  xy  36 B) x y  xy  36 C) x y  xy  36 D) x y  xy  36 E) x y  36 54 Multiply:  x2  y  x  y  A) B) C) D) E) 8x4  8x2 y  y 8x  12 x y  y 8x4  x2 y  y 8x  12 x y  y 8x4  y 55 Multiply:  x2  5x  2 x2  x  9 A) B) C) D) E) x  x3 – 28 x  59 x  18 x  x3 – 28 x  59 x  18 x  x3 – 28 x  59 x  18 x  x3 – 28 x  59 x  18 x  x3 – 28 x  59 x  18 Page 19 56 Multiply: ( a  4)(4a  2)( a  8) A) 4a + 14a  136a  64 B) 4a + 14a  136a  64 C) 4a + 14a  136a  64 D) 4a + 14a  136a  64 E) 4a – 14a  136a  64 57 Identify answers that are perfect square trinomials or differences of squares  x  3 x  3 A) x  18 x  B) 24 x + 30 x  C) 24 x – 30 x  D) 24 x + 30 x  E) 24 x  x  30 58 Identify answers that are perfect square trinomials or differences of squares  a  7b  2a  5b  A) 2a + 9ab  35b B) 2a – 9ab  35b C) 2a –14ab  35ab D) 2a – 9ab  35b E) 2a + 5ab  35b 59 Identify answers that are perfect square trinomials or differences of squares  2a  4b  a  3b  A) 2a + 2ab  12b B) 2a – 2ab  12b C) 2a + 4ab  12b D) 2a – 2ab  12b E) 2a – 6ab  12b Page 20 60 Factor: a  4a  A)  a   a   B)  a  2 D)  a  2   a   a  E) Nonfactorable C) 61 Factor: a  10a  25 A)  a   a   B)  a  52 D)  a  5   a   a  E) Nonfactorable C) 62 Factor: x2  6x  A)  x  3 x  3 B)  x  32 D)  x  3   x   x  E) Nonfactorable C) 63 Factor: x  8xy  16 y A)  x  y  x  y  B)  x  y 2 D)  x  4y  y  x  y  x  E) Nonfactorable C) Page 21 64 Factor: a  25 A)  a   a   B)  a  52 D)  a  5   a   a  E) Nonfactorable C) 65 Factor: 25c  A)   5c   5c  B)  5c  32 D)  5c  3  5c  3 5c  3 E) Nonfactorable C) 66 Factor: b12  A)  b6   b6   B) C) D) E) b  2 b  2   b   b  6 6 Nonfactorable 67 Factor: 25 x  y A)  y  x  y  x  B)  x  y 2 D) 5x  y   x  y  x  y  E) Nonfactorable C) Page 22 68 Factor: 36b c  49 A)   6bc   6bc  B)  6bc  2 D)  6bc    6bc   6bc   E) Nonfactorable C) 69 Multiply: (9 x  3)( x  3) A) x  27 x  B) x  30 x  C) x  x  D) x  30 x  E) x  70 Multiply: 8x2  y  x2  y  A) 16 x  16 x y  y B) 16 x  24 x y  y C) 16 x  x y  y D) 16 x  24 x y  y E) 16 x  y 71 Factor the following expression: x  512 A) ( x  8)  x  x  64  B) C) ( x  8)  x  x  64  ( x  8)  x  x  64  D) ( x  8)  x  x  64  E) Nonfactorable Page 23 72 Factor the following expression: y  729 A) ( y  9)  y  y  81 B) C) ( y  9)  y  y  81 ( y  9)  y  y  81 D) ( y  9)  y  y  81 E) Nonfactorable 73 Factor the following expression: 64a  125 A) (4a  5) 16a  20a  25 B) C) (4a  5) 16a  20a  25 (4a  5) 16a  20a  25 D) (4a  5) 16a  20a  25 E) Nonfactorable 74 Factor the following expression: 27 x3  64 y A) (3x  y)  x  16 y  B) C) (3x  y )  x  12 xy  16 y  (3x  y )  x  12 xy  16 y  D) (3x  y )  x  12 xy  16 y  E) Nonfactorable 75 Solve:  x   x    A) 4, B) 4,  C) 4, D) 4,  E) No solution Page 24 76 Solve: x  11x  18  A) 2, B) 2,  C) 2, D) 2,  E) No solution 77 Solve: x  13 x  36 A) 4, B) 4,  C) 4, D) 4,  E) No solution 78 Solve: y  25  A) 5, 5 B) 0, 25 C) 0,5 D) E) No solution 79 Solve: 49a   A) 0, B) 0, 49 C) 3 , 7 D) E) No solution Page 25 80 Solve: z + 3z  A) – B) 0,3 C) 0, –3 D) –3,3 E) No solution 81 Solve: 6a – 24a  A) B) 0, C) 0, –4 D) 4, –4 E) No solution 82 Solve: b b + 2  A) – B) 0, C) 0, –2 D) –2, E) No solution 83 Solve: z 5z + 2  A) – B) 0, C) 0, – D) –5, E) No solution Page 26 84 Solve: c  12c  20  A) 2, 10 B) 2,  10 C) 2, 10 D) 2, 10 E) No solution 85 Solve: x – 23 x  10  A) 2, B) ,5 C)  ,5 D)  , 5 E) No solution 86 Solve: 11y – 50 y  25 A) 5, B) ,5 11 C)  ,5 11 D)  , 5 11 E) No solution 87 Identify the function whose graph will make a steeper parabola f ( x)  3.78 x or g ( x)   x A) f ( x) B) g ( x) C) They are equal Page 27 88 Identify the function whose graph will make a steeper parabola g ( x)   x or h( x)  x A) g(x) B) h(x) C) none 89 Identify the function whose graph will make a steeper parabola k ( x)  4.3x or g ( x)   x A) g  x  B) k  x C) none 90 Identify the function whose graph will make a steeper parabola g ( x)  2.514 x or h( x)  2.62 x A) g ( x) B) h( x) C) none 91 Identify the function whose graph will make a steeper parabola 2 x or g ( x)  x A) f ( x) B) g ( x) C) They are equal f ( x)  92 Describe the shift of y  (2 x) by y  (2 x  4)2 A) shift units to the left B) shift units to the left C) shift units to the right D) shift units to the right E) shift units up Page 28 93 Describe the shift of y  x in terms of the value of A) shift r units to the left B) shift r units up C) shift r units to the right and r units up D) shift r units to the right E) shift r units down r in y  ( x  r )2 if r is positive 94 A graph has the same shape as y  x Its vertex is (0,  6) What is its equation? (There are two possibilities.) A) y  x  or y   x  B) y  x  or y   x  C) y  x  or y   x  D) y  x  or y   x  E) y  x  or y  x  Page 29 Answer Key 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 E D B C E A D A A B A D D A C A D C A A E C C B A E C E D C D C E C A C E D A A C B D A Page 30 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 D A D E B B D A A B D B B D D C B E C A D A D D B B B B A B C D A A C C B C C A C C A B B B Page 31 91 92 93 94 B B D C Page 32

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