Evaluate the integral by changing the order of integration in an appropriate way.
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Tides go up and down in a 12.4-hour period. The average depth of a certain river is 11 m and ranges from 8 to 14 m. The variation can be approximated by a sine curve. Write an equation that gives the approximate variation y, if x is the number of hours after midnight if high tide occurs at 8:00 am.
A. y = 11 sin (
- 
)
B. y = 3 sin (
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)
C. y = 3 sin (
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)
D. y = 11 sin (
- 8?)
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 55-yr-old woman. Then refer to the following table. What activity can the woman do that is approximately this value? 
A. 7.55; Cycling B. 6.418; Skiing C. 7.55; Mowing lawn D. 6.418; Ballroom or square dancing
Change the decimal to a percent.6.3
A. 63% B. 630% C. 0.0063% D. 0.63%
Determine whether the equation defines y as a function of x.2x = 13 - 5y
A. Yes B. No