Solve the problem.A particular substance decays in such a way that it loses half its weight each day. How much of the substance is left after 7 days if it starts out at 16 grams?
A. 
gram
B. 8 grams
C. 
gram
D. 4 grams
Answer: C
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Find the curvature ? for the given function.r(t) = (3t sin t + 3 cos t)i + 3j + (3t cos t - 3 sin t)k
A. ? = 3t
B. ? = - 
C. ? = 
D. ? = 
State whether you think the difference between what occurred and what you would expect by chance is statistically significant.In nine out of the last ten years, the stock market has gone up.
A. Statistically significant B. Not statistically significant
Solve the initial value problem.
= -18cos (3t), s '(0) = 11, s(0) = 8
A. s = 2 cos (3t) + 6 B. s = 2 cos (3t) + 11t + 6 C. s = -6 sin (3t) + 11 D. s = 6 cos (3t) + 11t + 2
Identify the degree of the polynomial; then indicate whether the polynomial is a monomial, binomial, or trinomial or has no special polynomial name.4x6 - 8x7 + 9x2 - 5
A. degree = 2; trinomial B. degree = 6; none of these C. degree = 15; trinomial D. degree = 7; none of these