Solve.The area of the playing surface of the tennis court shown is 
square feet. If its width is 
feet, find its length. 
A. (6x + 8) ft
B. (6x - 8) ft
C. (36x2 + 234x + 40) ft
D. (24x + 8) ft
Answer: A
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A population changes with time. Its level after t years is given by the function 
. After a period of population increase, the population reaches a maximum value. What can be said about 
at this time?
?
A. is positive.
B. is negative.
C. is zero.
D. is linear.
For the given probability density function, over the stated interval, find the requested value.f(x) = 
x over [0, 2
]; Find the median.
A. 
B. 
C. 2
D. 
For the given function, find x when y is equal to the indicated value.f(x) = 
- 
, y = 1
A. 6, -8 B. 0, 6 C. -6, 8 D. -5, 8
Write the statement indicated.State the contrapositive of the following:If he is happy, then he is smiling.
A. If he is smiling, then he is happy. B. If he is not happy, then he is not smiling. C. If he is happy, then he is not smiling. D. If he is not smiling, then he is not happy.