Onhisfirstjobheusedthe

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Unformatted text preview: 8 ­9 +5 y = 6x + 5 6 m = y­int = -2 y = 6x y = 6x ­ 2 9 8 7 6 5 4 3 2 1 x-2 y 14.) 6 CHAPTER 7 TEST REVIEW ANSWER KEY PART III: Answer all questions in this part. Clearly indicate the necessary steps, including appropriate formula substitutions, calculations, etc. 15.) What is the solution to the system of equations below? 9d ­ 3e = 39 4d + 2e = ­6 -36d + 12e = -156 36d + 18e = -54 30e = -210 30 30 e = -7 -4(9d - 3e = 39) 9(4d + 2e = -6) d=2 4d + 2e = -6 4d + 2(-7) = -6 4d - 14 = -6 + 14 + 14 4d = 8 44 d=2 e = -7 Ramon rented a sprayer and a generator. On his first job, he used the sprayer for 6 hours and the generator for 6 hours at a total cost of $90. On his second job, he used the sprayer for 4 hours and the generator for 8 hours at a total cost of $100. What was...
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