SOLUTION: f(x)=x^2+x-3 and g(x)=9x+9. Find g(-1) and f(g(-1)) This what I have so far g(x)=9(-1)+9 g(x)= -9+9 g(x)=0 I don't know what to do from this point forward to finish the p

Algebra ->  Functions -> SOLUTION: f(x)=x^2+x-3 and g(x)=9x+9. Find g(-1) and f(g(-1)) This what I have so far g(x)=9(-1)+9 g(x)= -9+9 g(x)=0 I don't know what to do from this point forward to finish the p      Log On


   

Question 788143: f(x)=x^2+x-3 and g(x)=9x+9. Find g(-1) and f(g(-1))
This what I have so far
g(x)=9(-1)+9
g(x)= -9+9
g(x)=0
I don't know what to do from this point forward to finish the problem. Any help would be greatly appreciated. Thank you.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+f%28x%29=x%5E2%2Bx-3+
+g%28x%29+=+9x+%2B+9+
+g%28-1%29+=+9%2A%28-1%29+%2B+9+
+g%28-1%29+=+0+
+f%28+g%28-1%29+%29+=+f%280%29+
+f%280%29+=+0%5E2+%2B+0+-+3+
+f%280%29+=+-3+
so, from above,
+f%28+g%28-1%29+%29+=+-3+