Solve the problem.The age distribution of students at a community college is given below. Age (years)Number of students (f)
1121?A student from the community college is selected at random. Find the probability that the student is at least 31. Round to the nearest thousandth.
A. 0.072
B. 0.047
C. 0.928
D. 81
Answer: A
Mathematics
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Evaluate.(-8x)1
A. -1 B. -8x C. -8 D. 8x
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Solve the equation graphically.-0.5x - 3 = -5Values of -0.5x - 3
A. -0.5 B. -3 C. -4 D. 4
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Solve the problem.A square plywood platform has a perimeter which is 6 times the length of a side decreased by 10. Find the length of a side.
A. 7 B. 2 C. 1 D. 5
Mathematics
Solve the problem.The number of years since two independently evolving languages split off from a common ancestral language is approximated by 
where r is the percent of words from the ancestral language common to both languages now. Find r if two languages split about 
ago. Round to the nearest percent.
A. 18% B. 7% C. 177% D. 70%
Mathematics