There are 4 weeks in a month.
All the numbers in the question are saying how much she will pay per week,so all we have to do is multiply each number by 4.
39.00×4=156
15.00×4=60
17.50×4=70
Now all we have to do is add.
156+60+70=286.
Your answer will be that Jane has to pay 286 dollars per month on the car.