Question

Helppppp pleaseeeeee!!!!!’

Answer 1

4, 12, 36, 108

Explanation:

a1: 4(3)^1-1 = 4(3)^0 = 4

a2: 4(3)^2-1 = 4(3)^1 = 12

a3: 4(3)^3-1 = 4(3)^2 = 36

a4: 4(3)^4-1 = 4(3)^3 = 108