Solve the problem.The given contingency table gives the number (in thousands) of U.S. households classified by educational attainment (high school graduate or less denoted with A, some college with no degree denoted B, an associate's degree denoted with C, and a bachelor's degree or higher denoted with D) and household income ($0 - $34,999 denoted with E, $35,000-$49,999 denoted with F, $50,000-$74,999 denoted G, and $75,000 and over denoted H).
Find the number of households in the given set.C ? F'
A. 9272
B. 14,881
C. 10,885
D. 24,153
Answer: A
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Use the formula for the nth term of an arithmetic sequence to solve the problem.During a certain year, a company has 149,938 employees. This number is then increased by 1874 employees per year. How many employees will there be 3 years later?
A. 157,434 B. 155,560 C. 153,686 D. 5622
Change to a decimal.700%
A. 0.7 B. 7 C. 70 D. 7.01
Perform the indicated operation.(-8x)3
A. -24x3 B. 512x3 C. -512x3 D. 24x3
Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 102 B. 10-2 C. 0.5 D. 0.69