### Home > MC2 > Chapter 10 > Lesson 10.1.6 > Problem 10-79

10-79.

Formula for compound interest:

*A* = *P*(1 + *r*)^{n}

6439(1 + 0.04)^{2}

$6964.42

Find how much money Mary will have in 8 years.

Is this amount enough?

Use the formula from part (a).

10-79.

Formula for compound interest:

*A* = *P*(1 + *r*)^{n}

6439(1 + 0.04)^{2}

$6964.42

Find how much money Mary will have in 8 years.

Is this amount enough?

Use the formula from part (a).