Solve the given equation for the indicated variable. (Leave ± in the answer, if appropriate)A = 
?r2 for r
A. r = 
B. r = ± 
C. r = ± 
D. r = 3
Answer: B
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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
Solve the problem.The diagram below shows a rope connecting the top of a pole to the ground. The rope is 21 yd long and touches the ground 18 yd from the pole. How tall is the pole? Round approximations to the nearest tenth. 
18 yd
A. 10.8 yd B. 5.4 yd C. 58.5 yd D. 19.5 yd
Multiply or divide as indicated. Write the answer in lowest terms.1
÷ 
A. 7
B. 6
C. 4
D. 5
Solve the problem.Assume that a person's threshold weight W, defined as the weight above which the risk of death rises dramatically, is given by W(h) = 3, where W is in pounds and h is the person's height in inches. Find the threshold weight for a person who is 6 ft 6 in. tall. Round your answer to the nearest pound.
A. 221.5 lb B. 255 lb C. 285.6 lb D. 154.5 lb