Solve the problem.Jay drove 240 kilometers at the average rate of 60 kilometers per hour. How long did the trip take?
A. 5 hours
B. 4 hours
C. 2 hours
D. 3 hours
Answer: B
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Solve the problem. Round your answer, if appropriate.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where 
, 
, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 13 in. 3/sec, at what rate is P increasing when P = 70 lb/in.2 and V = 50 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 
lb/in.2 per sec
C. 
lb/in.2 per sec
D. 
lb/in.2 per sec
Subtract.
A. 5537 B. 5493 C. 5533 D. 537
Solve the equation.-7y = 42
A. -6 B. 6 C. 49 D. -49
Find the length of the unknown side of the right triangle with legs a and b and hypotenuse c. Round to three decimal places, if necessary.a = 9, b = 12
A. c = 11 B. c = 14 C. c = 12 D. c = 15