The estimated marginal revenue for sales of ESU soccer team T-shirts is given by
?
?
where p is the price (in dollars) the soccer player charge for each shirt. Find 
.
?
Select the correct answer rounded to four decimal places.
?
A. 
B. 
C. 
D. 
E. 
Answer: A
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Fill in the blank with one of the words or phrases listed below.
The fraction equivalent of the % symbol is 
.
A. base
B. 100%
C. 0.01
D. 
Multiply and simplify.18 
A. 
B. -162
C. -2
D. 2
Solve the problem.Find the values of a, b, and c such that the graph of the quadratic equation 
passes through the points 
and 
A. a = 1; b = 5; c = -1 B. a = -1; b = -1; c = 5 C. a = -1; b = 5; c = -1 D. a = 1; b = -1; c = 5
Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 75 ft; time to reach ground = 2.5 seconds B. maximum height = 50 ft; time to reach ground = 2.5 seconds C. maximum height = 75 ft; time to reach ground = 1.25 seconds D. maximum height = 50 ft; time to reach ground = 1.25 seconds