For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (cosh t)i + (sinh t)j + tk
A. a = (- 
sinh t)T + N
B. a = (sinh t)T + N
C. a = (-sinh t)T + N
D. a = (
sinh t)T + N
Answer: D
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Add in the indicated base.10112 + 1102
A. 11,0002 B. 11,0012 C. 10,0012 D. 11112
Solve the problem.If an object is dropped from a tower, then the velocity, V (in feet per second), of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the result. Find V as a linear function of t, and use this function to evaluate V(4.4), the velocity of the object at time 
A. V(4.4) = 148.8 feet per second B. V(4.4) = 150.1 feet per second C. V(4.4) = 150.8 feet per second D. V(4.4) = 152.1 feet per second
Factor completely. If the polynomial cannot be factored, say it is prime.15x4 + 10x2 - 6x2 - 4
A. (5x2 + 2)(3x2 - 2) B. (15x2 + 2)(x2 - 2) C. (5x2 - 2)(3x2 + 2) D. (5x4 - 2)(3x + 2)
Write as a percent. Round the percent to the nearest tenth if necessary.
A. 3.7% B. 18.5% C. 1000% D. 37%