Solve.
- 7 = 
- 3
A. 80
B. 
C. - 80
D. - 
Answer: A
Mathematics
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Find the inverse of the function.f(x) = 
x + 2
A. f-1(x) = 
x + 9
B. f-1(x) = 9x - 18
C. f-1(x) = 
x - 2
D. f-1(x) = 9x + 18
Mathematics
Simplify the expression.23
A. -6 B. -8 C. 8 D. 1
Mathematics
Find the center of mass of a thin plate of constant density covering the given region.The region between the curve y = 
and the x-axis from 
to 
A. 
= 52, 
= 9 ln 9
B. 
= 
, 
= 
ln 9
C. 
= 
ln 9, 
= 
D. 
= 
, 
= 
ln 9
Mathematics
Simplify by first writing the radicals with the same index. Then multiply.
? 
A. 
B. 
C. 
D. 
Mathematics