Simplify the expression.165/4
A. 512
B. 128
C. 32
D. 256
Answer: C
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Solve the problem.The amount of alcohol in the bloodstream, A, declines at a rate proportional to the amount, that is, 
. If 
for a particular person, how long will it take for his alcohol concentration to decrease from 0.10% to 0.05%? Give your answer to the nearest tenth of an hour.
A. 0.2 hr B. 4.6 hr C. 2.3 hr D. 3.5 hr
LetU = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}Determine the following.A ? (B ? C)
A. {q, w, y} B. {q, r, w, y, z} C. {q, s, u, w, y, z} D. {q, y, z}
Find the amount of the sales tax or the tax rate and the total cost. Round money answers to the nearest cent.Cost of item: $670 Tax rate: 4
%
A. $30.15, $700.15 B. $301.50, $971.50 C. $36.85, $706.85 D. $23.45, $693.45
Find the x- and y-intercepts of f.f(x) = (x - 6)(x - 2)
A. x-intercepts: 6, 2; y-intercept: -8 B. x-intercepts: 6, 2; y-intercept: 12 C. x-intercepts: -6, -2; y-intercept: 12 D. x-intercepts: -6, -2; y-intercept: -8