Bella and heather put some money into their money boxes every week. the amount of money (y), in dollars, in their money boxes after a certain amount of time (x), in weeks, is shown by the equations below: bella: y = 25x + 60 heather: y = 30x + 10 after how many weeks will bella and heather have the same amount of money in their money boxes, and what is that amount?

10 weeks, $10
10 weeks, $310
9 weeks, $310
310 weeks, $