Solve the problem.A wheel with a 21-inch diameter is turning at the rate of 30 revolutions per minute. To the nearest inch per minute, what is the linear speed of a point on the rim?
A. 2025 in. per min
B. 2032 in. per min
C. 1979 in. per min
D. 1986 in. per min
Answer: C
Mathematics
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Solve using a matrix on a graphing calculator.
A. (2, -4) B. (2, -5) C. (1, -4) D. No solution
Mathematics
Factor by grouping.5x3 + 20x2 - 3x - 12
A. (5x2 - 3)(x + 4) B. (5x2 + 3)(x - 4) C. (5x2 + 3)(x + 4) D. (5x2 - 3)(x - 4)
Mathematics
Evaluate the sum.
?
?
A. 84 B. 36 C. 168 D. 79 E. 21
Mathematics
Solve the problem.Cindy will require $14,000 in 2 years to return to college to get an MBA degree. How much money should she ask her parents for now so that, if she invests it at 
compounded continuously, she will have enough for school? (Round your answer to the nearest dollar.)
A. $11,363 B. $17,445 C. $11,235 D. $9017
Mathematics