Solve using matrices.2x + 5y = 175x + 9y = 25
A. (5, -4)
B. (-4, -5)
C. (5, 4)
D. (-4, 5)
Answer: D
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Find the limit.
A. 
B. 15
C. 
D. No limit
Find the volume of the solid generated by revolving the region about the given line.The region in the second quadrant bounded above by the curve y = 16 - x2, below by the x-axis, and on the right by the y-axis, about the line x = 1
A. 128?
B. 
?
C. 
?
D. 
?
Provide an appropriate response.One way to measure a person's cardiofitness is to calculate how many METs, or metabolic units, he or she can reach at peak exertion. One MET is the amount of energy used when sitting quietly. To calculate ideal METs, we can use the expression: 
Researchers recommend that a person reach approximately 85% of his or her MET when exercising. Calculate 85% of the ideal MET for a 60-yr-old woman. Then refer to the following table. What activity can the woman do that is approximately this value? 
A. 8.1; Swimming B. 6.885; Cycling C. 6.885; Skiing D. 8.1; Skiing
An equation that defines y as a function of x is given. Solve for y in terms of x, and replace y with the function notation f(x).5x - 6y = 5
A. f(x) = 5 - 5x
B. f(x) = 
C. f(x) = 5 - 
D. f(x) = -5x - 