Find the sum of the measures of the angles of the polygon.A dodecagon
A. 2160°
B. 1800°
C. 1620°
D. 1440°
Answer: B
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Solve the problem.Find the value of a retirement savings account paying an APR of 5.8% after 45 years (contributions made at the end of each year, including the last year) when the annual contribution is $840. Round your answer to the nearest cent.
A. $150,293.50 B. $168,624.83 C. $158,587.63 D. $149,099.04 E. $179,245.06
Solve the problem.Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 15 coins with a total face value of $2.35, how many of the coins are nickels?
A. 13 nickels B. 8 nickels C. 9 nickels D. 7 nickels
Find the following. Assume that the letter can represent any real number.
A. 
B. -
C. 
D. x
Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 39 watches B. 84 watches C. 30 watches D. 42 watches