Solve the problem.April shoots an arrow upward into the air at a speed of 32 feet per second from a platform that is 21 feet high. The height of the arrow is given by the function h(t) = -16t2 + 32t + 21, where t is the time is seconds. What is the maximum height of the arrow?
A. 16 ft
B. 20 ft
C. 37 ft
D. 21 ft
Answer: C
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 cos 2t + 4 cos 6t, y = 5 sin 2t - 4 sin 6t, 0 ? t ? ?
A. 
B. 
C. 
D. 
Find the surface area of the surface S.S is the upper cap cut from the sphere x2 + y2 + z2 = 169 by the cylinder 
.
A. 26? B. 13 C. 650? D. -26?
Solve the problem.Of the 2,598,960 different five-card hands possible from a deck of 52 playing cards, how many would contain all black cards.
A. 32,890 hands B. 263,120 hands C. 131,560 hands D. 65,780 hands
Find, if possible, the number of elements in sets A, B, and C using the given information.n(A ? B ? C) = 21n(A ? B) = 4n(A ? C) = 5n(A - B) = 6n(C ? B) = 8n(A ? B ? C) = 2n(C - (A ? B)) = 2
A. n(A) = 8, n(B) = 15, n(C) = 13 B. n(A) = 8, n(B) = 11, n(C) = 15 C. n(A) = 10, n(B) = 13, n(C) = 13 D. The information is inconsistent or incomplete.