Question 888809
Given f(x) = 3x + 5 and g(x) = 4 - x² find 
f(a+h) - f(a)/h
-----------------
f(a+h) = 3(a+h)+5 = 3a + 3h + 5
f(a) = 3a + 5
----
f(a+h)-f(a) = 3h
------
[f(a+h)-f(a)]/h = 3
======================
Cheers,
Stan H.
-----------------