10 Chapter 1Solving Linear Equations 49. USING STRUCTURE Use the values 2, 5, 9, and 10 to complete each statement about the equation ax b 5. a. When a ___ and b ___, x is a positive integer. b. When a ___ and b ___, xis a negative integer. 50. HOW DO YOU SEE IT? The circle graph shows the percents of different animals sold at a local pet store in 1 year.Dog:48%Bird:7%Rabbit:9%Hamster: 5%Cat:x% a. What percent is represented by the entire circle? b. How does the equation 7 + 9 + 5 + 48 + x 100 relate to the circle graph? How can you use this equation to  nd the percent of cats sold? 51. REASONING One-sixth of the girls and two-sevenths of the boys in a school marching band are in the percussion section. The percussion section has 6 girls and 10 boys. How many students are in the marching band? Explain. 52. THOUGHT PROVOKING Write a real-life problem that can be modeled by an equation equivalent to the equation 5x 30. Then solve the equation and write the answer in the context of your real-life problem.MATHEMATICAL CONNECTIONS In Exercises 53–56, nd the height h or the area of the base B of the solid.53. B7 in. 54. hB 147 cm2Volume 84π in.3Volume 1323 cm355. B5 m 56. hB 30 ft2 Volume 15π m3 Volume 35 ft3 57.MAKING AN ARGUMENT In baseball, a player’s batting average is calculated by dividing the number of hits by the number of at-bats. The table shows Player A’s batting average and number of at-bats for three regular seasons. SeasonBatting averageAt-bats2010.3125962011.2964462012.295599 a. How many hits did Player A have in the 2011 regular season? Round your answer to the nearest whole number. b. Player B had 33 fewer hits in the 2011 season than Player A but had a greater batting average. Your friend concludes that Player B had more at-bats in the 2011 season than Player A. Is your friend correct? Explain. Maintaining Mathematical ProficiencyMaintaining Mathematical ProficiencyUse the Distributive Property to simplify the expression. (Skills Review Handbook) 58. 8(y + 3) 59. 5 — 6 ( x + 1 — 2 + 4 ) 60. 5(m + 3 + n) 61. 4(2p + 4q + 6)Copy and complete the statement. Round to the nearest hundredth, if necessary. (Skills Review Handbook) 62. 5 L — min L — h 63. 68 mi — h ≈ mi — sec 64. 7 gal — min ≈ qt — sec 65. 8 km — min ≈ mi — h Reviewing what you learned in previous grades and lessons