Simplify the given expression using the definition for negative exponents. Assume that all variables represent nonzero numbers.40
A. 1
B. 0
C. -1
D. 4
Answer: A
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Evaluate the integral using the given substitution.
dy , u = y6 + 2y3 + 6
A. 
(y6 + 2y3 + 6)4 + C
B. 
(y6 + 2y3 + 6)4 + C
C. 18(y6 + 2y3 + 6)2 + C
D. 
(y6 + 2y3 + 6)4(10y4 + 4y) + C
Find the indicated measure of central tendency.A meteorologist records the number of clear days in a given year in each of 21 different U.S. cities. The results are shown below. Find the midrange.721435284100981011209912186605971125130104748355169
A. 117 B. 110.5 C. 112 D. 98
Solve the problem.A balloon (in the shape of a sphere) is being inflated. The radius is increasing at a rate of 8 cm per second. Find a function, r(t), for the radius in terms of t. Find a function, V(r), for the volume of the balloon in terms of r. Find (V ? r)(t).
A. (V ? r)(t) = 
B. (V ? r)(t) = 
C. (V ? r)(t) = 
D. (V ? r)(t) = 
Simplify by combining like terms.
?
?
A. 
B. 
C. 
D. 
E. 