Question

Hello!) Can you help me please?

Answer 1

3)

f(n) = 4 x 1 + 5 = 9

f(n) = 4 x 2 + 5 = 13

f(n) = 4 x 3 + 5 = 17

f(n) = 4 x 4 + 5 = 21

4)  

f(n) = 3(1-2) - 4 = -7

f(n) = 3(2-2) - 4 = -4

f(n) = 3(3-2) - 4 = -1

f(n) = 3(4-2) - 4 = 2

5)

f(n) = 3n - 4

n = 17