Solve the problem.To approximate the velocity of a river, a circular paddle wheel with radius 0.43 feet is lowered into the water. If the current causes the wheel to rotate at a velocity of 14 revolutions per minute, what is the velocity of the current? Express the answer in miles per hour rounded to two decimal places if needed.
A. 37.82 miles per hour
B. 0.43 miles per hour
C. 0.07 miles per hour
D. 0.21 miles per hour
Answer: B
Mathematics
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Solve. Graph the solution on a number line, and express it in interval notation.-3 ? 
A. x < 24, (-?, 24)
B. x ? 24, [24, ?)
C. x ? 24, (-?, 24]
D. x > 24, (24, ?)
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Verify the identity.1 + sec2x sin2x = sec2x
What will be an ideal response?
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Solve the problem.If a single card is drawn from a standard 52-card deck, in how many ways could it be an ace or a spade?
A. 17 B. 16 C. 4 D. 1
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Find the sum.
+ 
A. 1
B. 
C. 
D. 
Mathematics