SOLUTION: Given that f(x) = 2x + 5 and g(x) = x − 7, solve for f(g(x)) when x = −3.

Algebra ->  Rational-functions -> SOLUTION: Given that f(x) = 2x + 5 and g(x) = x − 7, solve for f(g(x)) when x = −3.      Log On


   

Question 978821: Given that f(x) = 2x + 5 and g(x) = x − 7, solve for f(g(x)) when x = −3.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Can plug (-3) into g(x) to get -10.
f(-10)=-15
Another way: f(x)=2(x-7) +5=2x-14+5=2x-9
x= -3
2x-9= -15