Solve the problem.Find the area of the circular racetrack. Use 3.14 for ?. Round to the nearest foot. 
A. 13,816 ft2
B. 5024 ft2
C. 31,400 ft2
D. 45,216 ft2
Answer: A
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The profit earned when n items are produced is given by the function 
. If either increasing production or decreasing production will result in a decrease in profits, what can be said about marginal profit 
?
?
A. is positive.
B. is negative.
C. is zero.
D. is linear.
Express the given expression in simplest form with only positive exponents.(x-2y4z-2)(x-7y-7z-5)
A. x9y3z7
B. 
C. 
D. 
Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for an to find a20, the 20th term of the sequence.1, 5, 9, 13, 17, . . .
A. an = n + 4; a20 = 24 B. an = 4n + 3; a20 = 83 C. an = 4n - 3; a20 = 77 D. an = 3n - 4; a20 = 56
Solve the problem.The following graph shows weekend gross revenue for a summer blockbuster film. 
Find the total revenue the film earned over the first two weekends.
A. $207,392,640 B. $56,446,325 C. $175,601,895 D. $119,155,570