Question

The first term of a geometric sequence is 18 and the multiplier is 3.5. What is the 5th term of the sequence?

Answer 1

a₅ = 2701.125

Explanation:

Multiply each term by 3.5 , that is

a₁ = 18

a₂ = 3.5 × 18 = 63

a₃ = 3.5 × 63 = 220.5

a₄ = 3.5 × 220.5 = 771.75

a₅ = 3.5 × 771.75 = 2701.125

Answer 2

2701.125

Explanation:

fifth term = 18(3.5)^4