Question

Question #c40dd

Answer 1

42 weeks.

Explanation:

You will have $100 for every week: 100 multiplied by the number of weeks (which is `x`),

Plus the $2000 given to you,

Will equal your savings (which is `y`).

So your equation will be:

`y = 100x + 2000`

Then you need to know how many weeks it will take to have $6200.

This means your savings (`y` value) should be at $6200 after a number of weeks (`x` value).

Substitute 6200 for `y`:

`y = 100x + 2000`

`6200 = 100x + 2000`

Solve for `x`:

`6200 = 100x + 2000`

`6200 - 2000 = 100x`

`4200 = 100x`

`(4200)/100 = x`

`42 = x`

Therefore it will take 42 weeks to save up for a car that costs $6200.