### Home > CCG > Chapter 10 > Lesson 10.1.5 > Problem 10-58

10-58.

A six-year old house, now worth $

What is the multiplier?

Because the house value is appreciating, the multiplier must be greater than

. What did it cost when new?

Substitute the information in the problem into the generic exponential function.

Then calculate backwards to find the original value.Write a function of the form

, where*t*is the time in years, that represents the value of the house since it was new.