The flow of blood through an arteriole in cubic centimeters per second is given by
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?
where l is the length (in cm) of the arteriole, r is its radius (in cm), p is the difference in pressure between the two ends of the arteriole (in dyne/cm2), and k is the viscosity of blood (in dyne-sec/cm2). Find the approximate percentage change in the flow of blood if an error of 4% is made in measuring the length of the arteriole and an error of 3% is made in measuring its radius. Assume that p and k are constant.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Solve the given applied problem.A rectangular area of 2600 ft2 is to be fenced off along the bank of a river; no fence is required along the river. If the material for the fence costs $16 per running foot for the two ends and $15 per running foot for the side parallel to the river, what end length results in a cost of $2380.
A. 100 ft B. 52 ft C. 50 ft D. 25 ft
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Simplify. Your answer should be in lowest terms.11
- 2
- 3
A. 6
B. 6
C. 12
D. 6
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Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. 
B. -315
C. 
D. 
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Solve the equation.
n = 
n - 
A. 1
B. - 
C. 
D. - 1
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