SOLUTION: i have been out of school for 12 years and need a hand on this act practice question f(x)=3xsquared+4,f(x+1)=

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Question 7848: i have been out of school for 12 years and need a hand on this act practice question f(x)=3xsquared+4,f(x+1)=
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
If f%28x%29+=+3x%5E2+%2B+4, then to find f(x+1), substitute the (x+1) everywhere there is an x in the first function.
f%28x%2B1%29+=+3%28x%2B1%29%5E2+%2B+4
f%28x%2B1%29+=+3%28x%5E2+%2B+2x+%2B+1%29+%2B+4
f%28x%2B1%29+=+3x%5E2+%2B+6x+%2B+3+%2B+4
f%28x%2B1%29+=+3x%5E2+%2B+6x+%2B+7