Math HW question

Question

A student used f(x) = 25(1.08)x to show how the balance in a savings account will increase over time. What does the 25 represent?

A

The interest the savings account earned for the first year

B

The annual interest rate of the first year

C

The number of years the savings account has earned interest

D

The starting balance of the savings account

Answer 1

f(x) = 25(1.08)^x = amount in the account in x years

f(0) = 25(1.08)⁰ = 25 = amount in he account at the time that the account was opened