Question

f (n + 1) = f(n) – 2. If f(1) = 18, what is f(5)?

Answer 1

Answer: f(5)= 10

Step-by-step explanation:

f (n + 1) = f(n) – 2.

If f(1) = 18, then:

f(2) = f(1) – 2 = 16

f(3) = f(2) – 2 = 14

f(4) = f(3) – 2 = 12

f(5) = f(4) – 2 = 10