### Home > PC3 > Chapter 4 > Lesson 4.3.2 > Problem 4-125

4-125.

Recall that an exponential function, with a horizontal asymptote of , can be in the form

*where*

*a*is the initial value and

*is the multiplier. For each part below, determine the initial value, the multiplier, and the time units in each of the following situations.*

Bread costs

now and is increasing in price by each month. Initial value

, multiplier , time is in months. A car is worth

now and is depreciating in value by each year. Multiplier will be down

from . Bacteria grow at a rate of

every hour. There are currently . A

investment earns interest every month.