Find the expected value for the random variable.A business bureau gets complaints as shown in the following table. Find the expected number of complaints per day.
A. 2.85
B. 2.73
C. 3.01
D. 2.98
Answer: B
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Solve the problem.The population of a town was 34,600 at the beginning of 1970. If the population decreased 400 people per year, how many people lived in the town at the beginning of 1985?
A. 28,200 people B. 6000 people C. 29,000 people D. 28,600 people
Find the prime factorization of the number.12
A. 4 ? 2 B. 4 ? 3 C. 2 ? 2 ? 3 D. 3 ? 3
Solve the problem.A survey of the 2718 vehicles on the campus of State University yielded the following circle graph. 
Find the number of convertibles. Round your result to the nearest whole number.
A. 2229 B. 489 C. 625 D. 18
The _________ property of multiplication states that changing the order when multiplying does not affect the answer.
Fill in the blank(s) with the appropriate word(s).