SOLUTION: 19. f(x) = 15x + 12 g(x) = -10x + 15 find f(g(8)) A. 639 B. -963 C. 178031 D. -5943 E. -524 F. -68203

Question 1197811: 19. f(x) = 15x + 12
g(x) = -10x + 15
find f(g(8))
A. 639
B. -963
C. 178031
D. -5943
E. -524
F. -68203
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

find
first find

then

answer: B.

Answer by ikleyn(52798) (Show Source): You can put this solution on YOUR website!
.

It is a two-steps problem.

Solve it in two steps.

As the first step, calculate g(8).

As the second step, substitute the value g(8) into the formula for f(x) instead of x and calculate the answer.

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