Test 93 18. For each of the mathematical statements, identify the property used. Choose from the commutative property of multiplication and the associative property of multiplication. Explain your answer. a. 111 62 3 11 16 32 b. 111 62 3 3 111 62 19. Round each number to the indicated place value. a. 4850; hundreds b. 12,493; thousands c. 7,963,126; hundred-thousands 20. The attendance to the Van Gogh and Gauguin exhibit in Chicago was 690,951. The exhibit moved to Amsterdam, and the attendance was 739,117. Round the numbers to the ten-thousands place to estimate the total attendance for this exhibit. For Exercises 21–24, simplify, using the order of operations. 21. 22. 82 24 26 24 418 12 36 3114 102 65 215 3 1122 23. 24. 25. Brittany and Jennifer are taking an online course in business management. Brittany has taken 6 quizzes worth 30 points each and received the following scores: 29, 28, 24, 27, 30, and 30. Jennifer has only taken 5 quizzes so far, and her scores are 30, 30, 29, 28, and 28. At this point in the course, which student has a higher average? 26. The number of people who used the Internet during four recent years in the United States is shown in the graph. a. Find the change in the number of Internet users from year 2 to year 3. b. Of the years presented in the graph, between which two consecutive years was the increase the greatest? How much was the increase? Number of Users (thousands) 150,000 100,000 50,000 0 Number of Internet Users 198,595 212,573 213,015 228,445 1 2 3 4 Year 250,000 200,000 27. The table gives the number of calls to three fire departments during a selected number of weeks. Find the number of calls per week of each department to determine which department is the busiest. Time Period Number of (Number of Calls Weeks) North Side Fire Department 80 16 South Side Fire Department 72 18 East Side Fire Department 84 28 28. Find the perimeter of the figure. 31 mm 31 mm 29. Find the perimeter and the area of the rectangle. 128 ft 47 ft 30. Round to the nearest hundred to estimate the area of the rectangle. 1872 m 2379 m 15 mm 15 mm 32 mm 32 mm
miller_basic_college_math_3e_ch1_3
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