Question

Write the rule for the nth term (3,9,15,21,27)

Answer 1

Explanation:

nth term = 3*(2n - 1 )

n =1 ; first term = 3*( 2*1 - 1) = 3* (2-1) = 3*1 = 3

n = 2 ; second term = 3*( 2*2 - 1) = 3* (4-1) = 3*3 = 9

n = 3 ; third term = 3*( 2*3 - 1) = 3* (6-1) = 3*5 = 15