Solve the problem.Suppose that the speed of a car, measured in miles per hour (mph), is monitored for some short period of time after the driver applies the brakes. The following table relates the speed of the car to the amount of time, measured in seconds (sec), elapsed from the moment that the brakes are applied. Make a scatterplot of the data. What is happening to the speed of the car during this time frame?
A. The speed of the car
increased as time elapsed.
B. The speed of the car
decreased as time elapsed.
C. The speed of the car
decreased as time elapsed.
D. The speed of the car
increased as time elapsed.
Answer: B
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Solve:
120 Find the value of y: y = 10 log ÄÄÄ 15 a. 2.08 b. 5.61 c. 8.00 d. 9.03 e. 0.90
Solve the problem.Use the exact value cos 72° = 
and identities to find the exact value of sin 72°.
A. 
B. 
C. 
D. 
Simplify each side of the equation, if possible. Then solve the equation.
- 3 - 2 + 15 = 
- 4n + 7 + 5n
A. n = -9 B. n = -15 C. n = -29 D. n = 9
Solve the problem.If the average cost per unit C(x) to produce x units of plywood is given by 
what is the unit cost for 40 units? Round your answer to the nearest cent.
A. $30.00 B. -$10.00 C. $15.00 D. $0.75