SOLUTION: what is [fog](x) if f(x)= 2x +7 and g(x)= -3x+4. my list of possable answers is a.-6x-17 b.-6x+15 c.-6x+8 and d.-6x-10

Algebra ->  Algebra  -> Functions -> SOLUTION: what is [fog](x) if f(x)= 2x +7 and g(x)= -3x+4. my list of possable answers is a.-6x-17 b.-6x+15 c.-6x+8 and d.-6x-10      Log On

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Question 2337: what is [fog](x) if f(x)= 2x +7 and g(x)= -3x+4. my list of possable answers is a.-6x-17 b.-6x+15 c.-6x+8 and d.-6x-10
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
ta.
assuming fog is my fg(x), then...
fg(x)
f(-3x+4)
so whereever you have x, you just put all this in...
2(-3x+4) + 7
-6x+8+7
fg(x)=15-6x
answer b. EASY EASY EASY but students are scared of functions for some reason.
jon