Rationalize the denominator. Assume that all variables represent nonnegative numbers and that the denominator is not zero.
A. 
B. 
C. -1
D. 
Answer: D
Mathematics
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Use L'H
pital's rule to find the limit.
A. -18 B. 9 C. -9 D. 18
Mathematics
Calculate the arc length of the indicated portion of the curve r(t).r(t) = 3ti + 
j + 
k; -1? t ? 7
A. 40 B. 200 C. 150 D. 30
Mathematics
Solve the problem. Write ratios in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater. Find the ratio of pollutant D to pollutant B. 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Solve: 
? 2
A. 1 ? x ? 5 B. x ? -5 or x ? -1 C. -1 ? x ? -5 D. x ? 1 or x ? 5
Mathematics