Chapter 02 Test. 1 Solve the proportion. A 60 B 60 C 1.35 D Solve the proportion. A 5.4 B 7.4 C 1959 D 1.625

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1 Name: ate: 1 Solve the proportion Solve the proportion Solve the equation. 8x 5 = 12x opyright by Pearson Education Page 1 of 7

2 4 Solve the equation. 5 Solve the equation. 0.3b = Solve the proportion Write in miles per hour. Round to the nearest tenth. 3.7 mi/min 37.0 mi/h mi/h 0.6 mi/h 88.8 mi/h opyright by Pearson Education Page 2 of 7

3 8 Write in miles per hour. Round to the nearest tenth. 211 ft/s 2.4 mi/h 18,568.0 mi/h mi/h mi/h 9 Find the greatest possible percent error in calculating the volume of the prism. (The figure is not drawn to scale. The measurements are accurate to the nearest inch.) 24% 12% 79% 124% 10 The figures in the pair are similar. Find the missing length. 4 cm 8 cm 9 cm 10 cm opyright by Pearson Education Page 3 of 7

4 11 The figures in the pair are similar. Find the missing length. 9 ft 7.5 ft 19.2 ft 12 6-ft tall football player casts a 16-in. shadow. t the same time, the stadium bleachers cast a 6-ft shadow. How tall are the bleachers? 16 in. 16 ft 27 ft 2.25 ft 13 Find the percent of change. Where necessary, round to the nearest percent. escribe the percent of change as a percent of increase or decrease. 57,000 people to 97,000 people about 41%; percent of increase about 59%; percent of increase about 70%; percent of increase about 70%; percent of decrease opyright by Pearson Education Page 4 of 7

5 14 Find the percent of change. Where necessary, round to the nearest percent. escribe the percent of change as a percent of increase or decrease. 31 in. to 7 in. 77%; percent of increase 77%; percent of decrease 23%; percent of decrease 23%; percent of increase 15 You want to surround the perimeter of a garden with 35 stones. You need to place a certain number of large and small stones, and for every large stone, you want to use 4 small stones. hoose the correct equation to find the number of stones for each size. Then solve the equation. x + 4x = 35; 7 large stones and 28 small stones x + 5x = 35; 7 large stones and 28 small stones x + 4 = 35; 4 large stones and 31 small stones 4x = 35 + x; 12 large stones and 23 small stones 16 efine a variable and write an equation to model the situation. Then solve. The floor plan of a proposed auditorium shows a stage that measures 1.75 inches in width. The scale of the floor plan is 1 in. = 18 ft. What is the width of the proposed stage? Let w be the width of the stage; Let w be the width of the stage; ; 31.5 ft ; 31.5 ft Let w be the width of the stage; ; ft Let w be the width of the stage; ; ft opyright by Pearson Education Page 5 of 7

6 17 efine a variable and write an equation to model the situation. Then solve. Of 630 students in a school, 270 went to the school dance. bout what percent of the students went to the dance? Let p = the percent of students that went to the dance; ; 43% Let p = the percent of students that went to the dance; ; 233% Let p = the percent of students that went to the dance; ; 0.4% Let p = the percent of students that went to the dance; ; 2.3% 18 Explain which is more accurate: measuring to the nearest centimeter or to the nearest half inch? centimeter is smaller than half an inch, so measuring to the nearest centimeter is more accurate. centimeter is smaller than half an inch, so measuring to the nearest half inch is more accurate. half inch is smaller than a centimeter, so measuring to the nearest centimeter is more accurate. half inch is smaller than a centimeter, so measuring to the nearest half inch is more accurate. 19 nna traveled 26.2 miles in 4 hours. Lance traveled 19.3 miles in 3 hours. How can you tell who is traveling faster? Find the rates of each person. Round to the nearest tenth. ivide miles by hours for each person. The larger the rate is, the faster the speed; nna, 6.6 mph; Lance, 6.4 mph ivide miles by hours for each person. The smaller the rate is, the faster the speed; nna, 6.6 mph; Lance, 6.4 mph ivide hours by miles for each person. The larger the rate is, the faster the speed; nna, 0.1 mph; Lance, 0.2 mph ivide hours by miles for each person. The smaller the rate is, the faster the speed; nna, 0.1 mph; Lance, 0.2 mph opyright by Pearson Education Page 6 of 7

7 20 The cost of a V box set increased from $30 to $35. student says that this represents a 5% increase in the price. Explain the student s error. What is the actual percent increase? The student used the difference as the percent increase. The actual percent increase is about 105%. The student used the difference as the percent increase. The actual percent increase is about 17%. The student forgot to add 100% for the original price. The actual percent increase is 105%. The student forgot to add 100% for the original price. The actual percent increase is 117%. opyright by Pearson Education Page 7 of 7