Solve each problem.The price P of a certain computer system decreases immediately after its introduction and then increases. If the price P is estimated by the formula 
where t is the time in months from its introduction, find the time until the minimum price is reached.
A. 26.3 months
B. 10.5 months
C. 6.6 months
D. 13.1 months
Answer: C
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If you are driving at a speed of S miles per hour and make an emergency stop, you can expect to leave skid marks of length L feet. The relationship is
?
?
Suppose your speed is 82.00 miles per hour. Use functional notation to express the length of skid marks an emergency stop will produce, and then calculate that value.
?
A. 
feet
B. 
feet
C. 
feet
D. 
feet
Solve.-6 < 
? -2
A. 
B. 
C. 
D. 
Divide, simplifying if possible.
÷ 
A. 
B. 
C. 
D. 
Solve the problem.At a lumber company that sold shelves, a customer could choose from 5 types of wood, 4 different widths and 3 different lengths. How many different types of shelves could be ordered?
A. 100 types B. 60 types C. 12 types D. 27 types