Question

I need help please

Answer 1

`680=40m-3`

Explanation:

We know that he DOES spend $680, so we can put (680 = )

40 per month would be 40 times how many months total. Since we don't know how many months, we can use (40m)

3 months free simply means that he doesn't have to pay that price so we can take 3 months out of his total (- 3)

Hope this helps!!