SOLUTION: please help me with this problem. if f(x)= 2x find f(x+3)

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Question 519706: please help me with this problem.
if f(x)= 2x
find f(x+3)

Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
if f(x)= 2x
find f(x+3)
.
simply replace x in:
f(x)= 2x
with "x+3"
.
f(x+3)= 2(x+3)
f(x+3)= 2x+6 (this is what they're looking for)