Question

What is the answer to this question

Answer 1

A

Explanation:

Given the exponential function

f(t) = 228
`(0.975)^(t)` ← where t is time in years

Substitute t = 20 into f(t), that is

f(20) = 228 ×
`(0.975)^(20)` = 228 × 0.60268.... ≈ 137 → A