Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest ten. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 12,710 ; no
B. Estimate: 12,950 ; no
C. Estimate: 12,950 ; yes
D. Estimate: 12,710 ; yes
Answer: A
Mathematics
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A. $30.22 B. $3.26 C. -$3.26 D. -$30.22
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Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by 
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Find the domain of x in the expression.
?
?
A. 
B. 
C. 
D. 
E. 
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