SOLUTION: if f(x)= 2x find f(x+3) please help me. i dont understand functions at all,

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Question 519696: if f(x)= 2x
find f(x+3)
please help me. i dont understand functions at all,
Answer by jim_thompson5910(28476) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)= 2x

f(x+3)= 2(x+3) ... replace EVERY 'x' with 'x+3'

f(x+3)= 2x+6


Let me know if you need more help or if you need me to explain a step in more detail.
Feel free to email me at jim_thompson5910@hotmail.com
or you can visit my website here: http://www.freewebs.com/jimthompson5910/home.html

Thanks,

Jim