SOLUTION: If f(0)=2 and f(x+1)=3 times f(x)-5 what is f(4) ?

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Question 393211: If f(0)=2 and f(x+1)=3 times f(x)-5 what is f(4) ?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
f%280%29+=+2
f%28x+%2B+1%29+=+3%2A%28f%28x%29+-+5%29
I can say that x+=+0 and f%28x%29+=+2
f%281%29+=+3%2A%282+-+5%29
f%281%29+=+-9
Now I'll say x+=+1, f%28x%29+=+-9
f%282%29+=+3%2A%28-9+-5%29
f%282%29+=+-42
Set x+=+2 , f%28x%29+=+-42
f%283%29+=+3%2A%28-42+-+5%29
f%283%29+=+-141
Set x+=+3, f%28x%29+=+-141
f%284%29+=+3%2A%28-141+-+5%29
f%284%29+=+-438