Solve the problem.An appliance store sells 19 refrigerators a week. Estimate the total amount of money the store makes in a week if each refrigerator costs $728. Round the number of refrigerators to the nearest ten and the cost to the nearest hundred.
A. $16,000
B. $8,000
C. $7,000
D. $14,000
Answer: D
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Find the root.-
A. 4 B. -4 C. 16 D. Not a real number
Simplify the radical. Assume that all variables represent positive real numbers.
A. 
B. 2y
C. 
D. 
Simplify the expression. Assume that variables represent nonzero numbers.
2
A. 
B. 
C. 
D. 
An environmental group wants to use a survey to determine the extent to which its members would be willing to protest a recent decision of the governor of a particular state. Which of the following procedures would be most appropriate for obtaining a statistically unbiased sample? ? A. Survey a selection of people whose names are randomly chosen from the telephone directory. B. Have sign-ups for workers to gather signatures at local malls throughout the state. C. Survey members attending the annual convention of the environmental group. D. Survey a selection of people whose names are randomly chosen from a list of members of the environmental group.
What will be an ideal response?