Solve the problem.In a survey of 100 people, 32 preferred onions on their hot dogs. What percent preferred onions?
A. 0.32%
B. 
%
C. 3.2%
D. 32%
Answer: D
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Solve the problem.The slope to the tangent line of a curve is given by 
If the point (0, 3) is on the curve, find an equation of the curve.
A. f(x) = 
x3 - 12x2 + 9x + 1
B. f(x) = 
x3 - 
x2 + 9x + 1
C. f(x) = 
x3 - 
x2 + 9x + 3
D. f(x) = 
x3 - 12x2 + 9x + 3
Express the number in scientific notation.870,000
A. 8.7 × 105 B. 8.7 × 104 C. 8.7 × 10-4 D. 8.7 × 10-5
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. 2.6 hr B. 1.7 hr C. 0.3 hr D. 3.5 hr
Solve graphically.3x + 4y = 7
A. (-3, 4) B. (4, -4) C. No solution D. (-5, 5)