*answer for brianliest*(08.06)
joy and cullen 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:
joy: y = 30x + 20
cullen: y = 20x + 90
after how many weeks will joy and cullen have the same amount of money in their money boxes, and what is that amount?
6 weeks, $150
230 weeks, $7
7 weeks, $150
7 weeks, $230