### Home > GB8I > Chapter 2 Unit 2 > Lesson INT1: 2.2.2 > Problem 2-66

2-66.

Greta is opening a savings account. She starts with

is the number of weeks starting with week 1, and

*y*is the amount of money.

The -intercept, or

*, is the original (starting) price. The slope is the growth rate.*

Both of these are given in the problem.

Substitute them into the equation.

There are 52 weeks in a year.

Remember that is the week number.