Find the probability.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1113?A student from the community college is selected at random. Find the probability that the student is at least 31. Round your answer to three decimal places.
A. 0.925
B. 0.050
C. 0.075
D. 83
Answer: C
Mathematics
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Solve the problem.A right circular cylinder is obtained by revolving the region enclosed by the line x = r, the x-axis, and the line y = h, about the y-axis. Find the volume of the cylinder.
A. ?rh2 B. 2?r2h C. ?rh D. ?r2h
Mathematics
Solve the equation. 
= 9
A. -9 B. 9 C. -9, 9 D. 81
Mathematics
Solve the problem.What is the rate on an investment that triples $9465 in 35 years? Assume interest is compounded monthly.
A. 2.6% B. 3.1% C. 2.1% D. 3.9%
Mathematics
Use l'Hospital's rule, if applicable, to find the limit.
A. -1
B. ?
C. 
D. 0
Mathematics