### Home > AC > Chapter 4 > Lesson 4.2.4 > Problem 4-99

4-99.

CHANGING POPULATIONS

Highland has a population of

Write an equation that represents each city's population over time. What do your variables represent?

How do the current populations and rates of change relate to ?

The rate of change is the slope.

Highland:

Lowville:

Be sure to identify what the variable represent.

Solve the problem. Show your work.

Use the Equal Values Method.