Question

You have decided that you are going to start saving money, so you decided to open an

account to start putting money into for your savings. You started with $300, and you
are going to put back $30 a week from your paycheck.
Write an equation to represent the situation.
How long have you been saving in order to have $720 in your account?
Weeks.

Answer 1

y=30x+300

14 weeks

Explanation:

Part A:

To begin, we are asked to write an equation. We are given the amount you start with, which is $300, and you put $30 in every week.

We can write an equation that looks like:

y=30x+300

with x being the number of weeks you put in money.

Part B:

Part B asks us to find x, the number of weeks that you had to put in money to save a total of $720.

We have the equation:

y=30x+300

with x being the number of weeks, and y being the total amount, $720. This means we can substitute:

720=30x+300

subtract 300 from both sides

420=30x

divide both sides by 30

14=x

So, you had to have been saving for 14 weeks.

Hope this helps! :)