### Home > INT2 > Chapter 7 > Lesson 7.1.1 > Problem 7-21

7-21.

The principal’s new car cost

Recall:

value of car after number of years

*number of years*

Substitute the values given and solve for .

7-21.

The principal’s new car cost

Recall:

value of car after number of years

Substitute the values given and solve for .