192 Chapter 2 Linear Equations and Inequalities in One Variable 51. Solve each inequality. Graph the solution set and write the solution set in interval notation and in set-builder notation. (Section 2.7, Objectives 1– 4 ) - a. 0.4a - 7.7 ≤ -2.1 b. -6 < 4a + 6 < 26 c. 8x + 3(x + 12) < 9x +16 d.3.5 ≤ 0.5y - 1.4 ≤ 1.2 Write an inequality that can be used to solve each problem. Solve the inequality and answer the question in complete sentences. (Section 2.7, Objective 5 ) 52. Myra’s final grade in her math class is based on a weighted average. Homework counts as 10%, quizzes count as 20%, tests count as 50%, and the final exam counts as 20%. If she has a homework average of 72, a quiz average of 68, and a test average of 82, what score does she need on her final exam to have at least an 80 for her final grade? 53. The cost to rent a car for a week is $320 plus $0.35 per mile. How many miles can be driven if you have at most $740 to rent the car for a week? Round to the nearest whole number, if necessary.
hendricks_beginning_algebra_1e_ch1_3
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