Find the requested function value.f(x) = 
, g(x) = 9x + 4Find (g ? f)(31).
A. 58
B. 1698
C. 78
D. 
Answer: A
Mathematics
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Describe the domain of the function of three or more varables.f(x, y, z) = x ln 
A. All points in ?3 that satisfy yz > 0. B. All points in ?3. C. All points in ?3 that satisfy yz ? 0. D. All points in ?3 that satisfy x > 0.
Mathematics
Find the limit.
csc-1 x
A. 
B. - 
C. 0
D. -?
Mathematics
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
Mathematics
Find the product. Simplify before performing the multiplication.
? 
A. -7
B. 
C. 1
D. -1
Mathematics