Question

If f(1)=3 and f(x+1)=f(x)+2, what is f(5)?

Answer 1

f(1) = 3
f(2) = f(1) + 2 = 3 + 2 = 5
f(3) = f(2) + 2 = 5 + 2 = 7
f(4) = f(3) + 2 = 7 + 2 = 9
f(5) = ...see pattern......= 11
f(6) = ..............................13

Answer 2

what if you were asked to find f(12345), would you still go by the above pattern?

Answer 3

I think one will need to find the equation here first and then plug in x....

Answer 4

2x12345 + 1

Answer 5

f(x) = 2x + 1