For the pair of functions, find the indicated composition.f(x) = 
, g(x) = 7x + 6Find (g ? f)(x).
A. x + 12
B. x - 
C. 7x + 36
D. x
Answer: D
Mathematics
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Factor completely.y4 - 2y2z2 + z4
A. (y - z)2(y + z)2 B. (y - z)(y + z) C. (y - z)(y + z)(y2 + z2) D. (y2 - z2)2
Mathematics
Use reference angles to find the exact value of the expression. Do not use a calculator.cos 
A. 1 B. 0 C. -1 D. undefined
Mathematics
Perform the indicated operation and, if possible, simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Rewrite the expression as a sum or difference of logarithms or multiples of logarithms.logn 
A. 
logn(6) + 
logn(x) + 2 logn(z)
B. 
logn(6) - 
logn(x) - 2 logn(z)
C. logn(6) + 5 logn(x) - 6 logn(z)
D. 
logn(6) + 
logn(x) - 2 logn(z)
Mathematics