Solve the problem.The sales of a mature product (one which has passed its peak) will decline according to the function 
where t is time in years since the peak sales. Find the sales of a product 15 years after its peak sales if 
and 
Round to the nearest whole number.
A. 3600 sales
B. 88,307 sales
C. 1,773,702 sales
D. 1800 sales
Answer: A
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An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 5;
T = 3 seconds
A. d = -3 cos 
B. d = -5 sin 
C. d = -5 cos 
D. d = -5 cos 
Subtract. Write a mixed numeral for the answer.
A. 13
B. 14
C. 12
D. 13
Solve the system of equations using Cramer's rule.2x - y - 2z = -16x + 
y - 4z = 10
x + 
y - 
z = 15
A. (3, 10, 6) B. (5, 14, 6) C. (4, 12, 6) D. (4, 10, 7)
Find the limit of the function algebraically.
A. 1 B. -12 C. -6 D. Does not exist