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Solving functions

Given f(x)= 4x squared - 3x + 2 and g(x)= 3x - 2, find each of the following. simplify the expression if possible.

a. f(-5)

b. f(x+h) - f(x)/ h

c. (f o g)(x)

Solution Preview

a) f(-5) = 4 * (-5)^2 - 3*(-5) + 2 ( replacing x by -5)
<br> = 100 + 15 +2
<br> = 117.
<br>
<br>b) f(x+h)-f(x)/h = ...

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