### Home > CCAA > Chapter 8 Unit 10 > Lesson CC3: 8.2.3 > Problem 8-90

8-90.

Mary wants to have

If Mary does not take out or deposit any money, how much money will Mary have when she is

? Formula for compound interest:

2 Will Mary have enough money for her trip when she is

? Find how much money Mary will have in

years. Is this amount enough?

Use the formula in (a).

If Mary were to graph this situation, describe what the graph would look like.

Is the amount of money Mary has increasing or decreasing? In what way is it doing so?