Question

A sequence can be generated by using an = 4a(n - 1), where a1 = 6 and n is a whole

number greater than 1. What are the first four terms in the sequence?

A: 6, 24, 96, 384
B: 6, 10, 14, 18
C: 6, 20, 100, 500
D: 6, 20, 76 300

Answer 1

The answer is A. Correct me if i’m wrong.

Answer 2

First four terms are: 6 , 24 , 96 , 384

Explanation:

a₁ = 6

an = 4a(n-1)

a₂ = 4* a₍₂₋₁₎ = 4 * a₁ = 4*6 = 24

a₃ = 4*a₍₃₋₁₎ = 4 * a₂ = 4 * 24 = 96

a₄ = 4* a₍₄₋₁₎ = 4 * a₃ = 4 * 96 = 384