### Home > CC3 > Chapter 8 > Lesson 8.3.1 > Problem 8-131

8-131.

Daniella has $210 in the bank, and her balance is growing at a rate of $3 each month. Lori has $187 in the bank, but her balance is growing at a rate of $4.50 each month. Write a system of equations to find when the girls will have the same amount of money. Be sure to define your variables. Homework Help ✎

Write two equations, one for Daniella and one for Lori,

where *x* = the number of months.

To find when the girls will have the same amount of money, set the two equations equal to each other.

210 + 3*x* = 187 + 4.5*x*

Daniella: *y* = 210 + 3*x*

Lori: *y* = 187 + 4.5*x*

Be sure to know how to get this answer.