Simplify.
A. 5
B. 25
C. -5
D. -25
Answer: C
Mathematics
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Evaluate the integral by using a substitution prior to integration by parts.
A. 
- 
ln (x + 
) + C
B. 
+ 
ln (x + 
) + C
C. 
+ 
ln (x + 
) + C
D. 
- 
ln (x + 
) + C
Mathematics
Find the domain of the function.h(x) = 2x - 4
A. {x|x ? 0} B. {x|x ? 4} C. {x|x is any real number} D. {x|x > 0}
Mathematics
Solve the problem.The average daily temperature T of a city in the United States is approximated by T = 55 - 23 cos 
(t -30)where t is in days, 1 ? t ? 365, and t = 1 corresponds to January 1. Find the period of T.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Given functions f and g, perform the indicated operations.f(x) = 
,g(x) = 
Find fg.
A. (3x + 2)(25x - 9)
B. (3x + 2)(5x - 3)
C. (5x - 3)(
)
D. (
)(
)
Mathematics