Question

A sequence can be generated by using an= 3an-1, where a1 = 10 and n is a whole number greater than 1.

What are the first 3 terms in the sequence?
A. 3, 13, 23
B. 10, 30, 90
C. 10, 13, 16
D. 3, 30, 300

Answer 1

B

Explanation:

using the recursive rule
`a_(n)` = 3
`a_(n-1)` and a₁ = 10, then

a₁ = 10

a₂ = 3a₁ = 3 × 10 = 30

a₃ = 3a₂ = 3 × 30 = 90

the first 3 terms are 10 , 30 , 90