Question

Find an explicit rule for the nth term of the sequence.

9, 36, 144, 576

Answer 1

they have a multiplier, to find it, divide one term by the previous term

Answer 2

3^2 , (3+3)^2 , (6+6)^2 = (12+12)^2

double the previous number then square

Answer 3

an = 9 • 4^(n - 1)