Solve the problem.April shoots an arrow upward into the air at a speed of 64 feet per second from a platform that is 21 feet high. The height of the arrow is given by the function h(t) = -16t2 + 64t + 21, where t is the time is seconds. What is the maximum height of the arrow?
A. 17 ft
B. 85 ft
C. 64 ft
D. 21 ft
Answer: B
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Solve the problem. Express your answer as an integer or simplified fraction.
- 4 = 
- 3
A. - 14 B. - 6 C. 14 D. - 2
Graph the function and its inverse on the same Cartesian plane.f(x) = log2 x
A. 
B. 
C. 
D. 
Solve the problem using matrices.A chemist has prepared two acid solutions, one of which is 4% acid by volume, another 11% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of 
solution.
A. 3.61 cc of the 4% solution and 46.39 cc of the 11% solution B. 20 cc of the 4% solution and 20 cc of the 11% solution C. No solution D. 27 cc of the 4% solution and 23 cc of the 11% solution
Solve the equation for ? if 
. Do not use a calculator.
?
?
A. 60°; 300° B. 150°; 330° C. 30°; 210° D. 135°; 315° E. 120°; 300°