SOLUTION: Let f(x)=3x-2, g(x)=x^2+5 Find the following A) (f+g)(4) B) (fg)(0) C) (f/g)(9)

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Question 1043864: Let f(x)=3x-2, g(x)=x^2+5
Find the following
A) (f+g)(4)
B) (fg)(0)
C) (f/g)(9)
Found 2 solutions by advanced_Learner, MathTherapy:
Answer by advanced_Learner(501) About Me  (Show Source):
You can put this solution on YOUR website!
Let f(x)=3x-2, g(x)=x^2+5
Find the following
A) (f+g)(4)
B) (fg)(0)
C) (f/g)(9)
a.
%28%28%283x-2%29%2B%28x%5E2%2B5%29%29%29%2A4
%28x%5E2%2B3x%2B3%29%2A4
%284x%5E2%2B12x%2B12%29
b.
%283x-2%29%28x%5E2%2B5%29%2A0=0
c.%28%283x-2%29%2F%28x%5E2%2B5%29%29%2A9
c.%28%2827x-18%29%2F%28x%5E2%2B5%29%29

feedback is appreciated

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Let f(x)=3x-2, g(x)=x^2+5
Find the following
A) (f+g)(4)
B) (fg)(0)
C) (f/g)(9)
A.   (f+g)(4) = f(4) + g(4) = 10 + 21 = highlight_green%2831%29	

B.   If f(g(0)), then: f(5) = 13

     If (f*g)(0), then: - 2(5) = - 10	

C.   highlight_green%28%28f%2Fg%29%289%29+=+f%289%29%2Fg%289%29+=+25%2F86%29%29