10) Use front-end rounding to estimate 8892 13. Then, fi nd the exact answer. Simplify each expression. 11) 12x 5(7x 4) 19 11x 12) 2 3 n 3 4 7 8 n 1 Solve each equation. 13) 7p 28 14) 11 3 2 a 10 15) 3 5 k 1 2 1 5 k 3 10 16) 5y 3(3y 4) 8y 2 17) Identify each fi gure as a line, line segment, or ray, and name it using the correct notation. a) R T b) P N 18) Find the area of the triangle. 13 mm 8 mm 19) Find the area and perimeter of the rectangle. 1 yd 1 2 yd 2 3 20) Find the volume and surface area of the box. 1 ft 1 2 3 ft 2 ft Write an equation to solve each problem. Use the Five Steps for Solving Applied Problems. 21) Seven less than four times a number is 65. Find the number. 22) Online spending during the holiday season in 2011 was about $4 billion more than in 2010. Together during both years, holiday shoppers spent about $66 billion online. How much was spent each year? (www.macworld.com) 23) A carpenter has a board that is 51 in. long. He needs to cut it into two pieces so that one piece is half as long as the other. What will be the length of each piece? 24) Find the measure of each angle. x° Q (3x 2 6)8 P R (9x 1 4)8 25) A town has a rectangular, fenced-in storage area where it keeps its snowplows, backhoes, and other heavy equipment. Find the length of the storage area if it is 190 ft wide and covers 45,600 ft2. www.mhhe.com/messersmith CHAPTER 4 Cumulative Review for Chapters 1–4 355
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