SOLUTION: If f(1) = 3 and f(n)=-2f(n-1)+1, then f(5)= ? multiple choice options: -5,11, 21, 43 I tried plugging in f(1)=-2f(1-1)+1 but got 3= -2 (and they are obviously not equal). I a

Question 934993: If f(1) = 3 and f(n)=-2f(n-1)+1, then f(5)= ?
multiple choice options: -5,11, 21, 43
I tried plugging in f(1)=-2f(1-1)+1 but got 3= -2 (and they are obviously not equal).
I also tried just plugging in f(5) = -2f(5-1)+1 and got -7, but that was not among the answer choices.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

Now work backwards

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