Let a and b be positive numbers. Determine whether the statement is true or false.(-a)(-b) is a positive number.
A. True
B. False
Answer: A
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Solve the problem.A frustum of a right circular cone has a height of 10 m, a base of radius 3m, and a top of radius 2m. Find its volume.
A. 
?
B. 190?
C. 
?
D. 19?
For an arc length s, area of sector A, and a central angle ? of a circle of radius r, find the indicated quantity.r = 5 cm, s = 30 cm, find ? in radian measure
A. 150 B. 6 C. 6? D. 150?
Solve the problem. Round your answer to the nearest cent.Brad invests $1400 in an account paying 13% compounded quarterly. How much is in the account after 6 months?
A. $1488.22 B. $1787.66 C. $1422.57 D. $1492.48
Solve the problem.If Alison's company charged $242.55 for 11 hours of work, how much did they charge per hour?
A. $24.26/hour B. $11.00/hour C. $33.05/hour D. $22.05/hour