<PRE><B>Question 762501</B>
Let f(x)=x^2-1 and g(x)=2x-3 
Find (g o f)(3) = g[f(3)] = g[3^2-1] = g[8] = 2*8-3 = 13
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Ans: C
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A. 0

B. 24

C. 13

D. 8 

2. 
Let f(x)=x^2 -1 and g(x)=2x+4 
Find (f o g)(x) = f[g(x)] = f[2x+4] = (2x+4)^2-1 = 4x^2+16x+15
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Ans: D
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Cheers,
Stan H.
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A. 4x + 12

B. 4x2 - 12x + 4

C. 4x -12

D. 4x2 + 16x + 15 

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