Posted by Anonymous on Tuesday, March 5, 2013 at 1:29pm.
if f(x) =x+3/7 and g(x) =4+5x find (gof) (x)

College math  Dr. Jane, Tuesday, March 5, 2013 at 1:34pm
Replace the x is the f(x) by the values for g(x)
for the x is the f(x) you would write 4 + 5x + 3/7
I don't know if the problem is
(x+3) all divided by 7
or if it is x added to 3/7

College math  Steve, Tuesday, March 5, 2013 at 2:43pm
(g◦f)(x) = g(f(x))
g(x) = 4+5x, so
g(f) = 4 + 5f
= 4+5(x+3/7)
and we are back to Dr. Jane's question

College math  Anonymous, Tuesday, March 5, 2013 at 3:27pm
Yes it is (x+3) all divided by 7
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