Solve the problem.If h = -16t2 + 192t represents the height of a firework, in feet, t seconds after is was fired, when will the firework be 576 feet high?
A. -6 sec
B. 36 sec
C. 96 sec
D. 6 sec
Answer: D
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Find the indicated intersection or union.Let A = {q, s, u, v, w, x, y, z}, B = {q, s, y, z}, C = {v, w, x, y, z}, and D = {s}. List the elements in the set A ? B.
A. {v, x} B. {s, u, v, w, x, z} C. {q, s, u, v, w, x, y, z} D. {s, u, w}
Determine whether the relation is a function.{(-6, -5), (-1, -4), (1, -5), (1, -5)}
A. No B. Yes
Solve the problem.The sales in thousands of a new type of product are given by S(t) = 70 - 90e-0.8t, where t represents time in years. Find the rate of change of sales at the time when t = 6.
A. -8621.5 thousand per year B. -0.6 thousand per year C. 0.6 thousand per year D. 8621.5 thousand per year
Solve the problem.How long does it take $1125 to triple if it is invested at 7% interest, compounded quarterly? Round your answer to the nearest tenth.
A. 18.1 yr B. 18.1 mo C. 15.8 yr D. 15.8 mo