Solve the problem.The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. The exponential regression equation was found to be 
where x represents the number of years since 2000. Use a graphing calculator to determine the halving time for the exponential model.
A. 10 years
B. 2 years
C. 4 years
D. 3 years
Answer: C
Mathematics
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Perform the indicated operation. Assume that all variables are nonnegative.
? 
A. 15x
B. 15x2
C. 3x
D. 15
Mathematics
Write the fractions in lowest terms. Then determine whether the pair of fractions is equivalent or not equivalent.
and 
A. Equivalent B. Not equivalent
Mathematics
Use the quotient rule to divide and simplify.
A. 3
B. 6
C. 3
D. 
Mathematics
Add. 
A. 13 B. 10 C. 9 D. 7
Mathematics