Question

Find f(n - 1) if f(x) = 2x^2 - x + 9.

Answer 1

Simply go through you equation and substitute (n-1) every time you see an x!

What do you get?

Answer 2

a) 2n^2 - n + 6

b) 2n^2 - 5n + 10

c) 2n^2 - n + 9

d) 2n^2 - 5n + 12

Answer 3

i'm not sure

Answer 4

2(n-1)^2-(n-1)+9?

Answer 5

but thats not a choice

Answer 6

perfect :D

Answer 7

Well, it's not a choice cuz you have to simplify :)

Answer 8

i think its b?