Solve.The price of a jacket was reduced from $117 to $81.90. What was the percent of decrease in the price?
A. 30%
B. 3%
C. 31%
D. 32%
Answer: A
Mathematics
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Complete the identity. 
= ?
A. 1 B. -1 C. cos2 x D. sin2 x
Mathematics
Two persons are to run a race, but one can run 11 meters per second, whereas the other can run 5 meters per second. If the slower runner has a 72-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time? ?
A. 10.5 sec B. 12 sec C. 11.5 sec D. 13 sec E. 14.40 sec
Mathematics
Solve the problem.Use the formula A = P(1 + r)2 to find what the rate of interest is if a principal amount of $4000 grows to $4752.40 in 2 years, if interest is compounded annually.
A. 7% B. 10% C. 11% D. 9%
Mathematics
Solve the equation analytically.7x - (4 - x) = 2[7 - (5 + 9x - 7)]
A. 
B. 
C. 
D. 
Mathematics