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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 + 3x = 187 + 4.5x

Daniella: y = 210 + 3x
Lori: y = 187 + 4.5x

Be sure to know how to get this answer.