### Home > CCA > Chapter 2 > Lesson 2.3.2 > Problem2-93

2-93.

Greta is opening a savings account. She starts with $100 and plans to add$50 each week. Write an equation she can use to calculate the amount of money she will have after any number of weeks. How much money will she have after 1 year? Homework Help ✎

x is the number of weeks starting with week 1, and y is the amount of money.

The y-intercept, or b, 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 x is the week number.