... are parallel, you knowthat x can be added to x + 10 to equal 180. Theequation is thus, x + x + 10 = 180.ExampleSolve for x:2x + 10 = 180 10 10 ᎏ22xᎏ= ᎏ1720ᎏx = 85Therefore, m∠x ... (c) (m)1,000 100 10 ᎏ110ᎏᎏ1100ᎏᎏ1,0100ᎏExamples:■1 hectometer = 1 hm = 100 meters■1 millimeter = 1 mm = ᎏ1,0100ᎏmeter = .001 meter■1 dekagram = 1 dkg = 10 grams■1 ... of terms.Therefore, (3x)(7x) + (3x) (10) + (1)(7x) +(1) (10) = 21x2+ 30x + 7x + 10. After we combine like terms, we are left with theanswer: 21x2+ 37x + 10. FactoringFactoring is the reverse...