Solve.The annual depreciation rate r (0 < r < 1) of a car purchased for P dollars and worth A dollars after t years can be modeled by the following formula: 
Find the depreciated value of a car 5 years after it is purchased new for $30,000 if the depreciation rate is 21%. Round your answer to the nearest dollar.
A. $23,700
B. $9231
C. $12
D. $6300
Answer: B
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Solve the problem.If a person is randomly selected, find the probability that his or her birthday is not in May. Ignore leap years.
A. 
B. 
C. 
D. 
Determine whether the given terms are like or unlike.9a, 7a
A. Unlike B. Like
Calculate. Write the answer in lowest terms and as a mixed number where appropriate.3
? 12
A. 108
B. 15
C. 44
D. 36
Solve the problem.The following data represents the normal monthly precipitation for a certain city in Arkansas. 
Draw a scatter diagram of the data for one period. Find the sinusoidal function of the form 
that fits the data. Draw the sinusoidal function on the scatter diagram. Use a graphing utility to find the sinusoidal function of best fit. Draw the sinusoidal function of best fit on the scatter diagram.
What will be an ideal response?