Solve the problem.The table below shows the results of a consumer survey of annual incomes in 100 households. 
What is the probability that a household has an annual income less than $25,000?
A. 0.72
B. 0.28
C. 0.56
D. 0.2
Answer: B
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Solve.Last year a company had 5879 employees. This year the number of employees increased by 1378. How many employees does the company have now?
A. 7357 employees B. 7157 employees C. 7267 employees D. 7257 employees
Determine whether or not the function is one-to-one.f(x) = 
A. No B. Yes
Solve the problem.The stock market gained 54 points on Monday. It had closed the previous Friday at 2673 points. How many points did the market close at on Monday?
A. 2729 points B. 2619 points C. 2727 points D. 2618 points
Solve.After being struck with a hammer, a gong vibrates 40 vibrations in the first second and in each second thereafter makes 
as many vibrations as in the previous second. Find how many vibrations the gong makes before it stops vibrating.
A. 240 vibrations B. 250 vibrations C. 48 vibrations D. 43 vibrations