CPM Homework Help : CC3 Problem 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.

Hint:

Write two equations, one for Daniella and one for Lori,
where $x =$ the number of months.

More Help 2:

To find when the girls will have the same amount of money, set the two equations equal to each other.
$210 + 3x = 187 + 4.5x$

More Help 1:

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

Answer:

$15\frac{1}{3}$

Be sure to know how to get this answer.