Question

*PLEASE ANSWER PLEASE 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

Answer 1

30x+20=20x+90 (J's money = C's money )

10x=70
x=7 weeks
they have same money in 7 weeks

money= 30(7)+20=210+20=230

Answer 2

Hello Kayla, x = 7. If it is plugged into both equations both will equal have $230 in their money boxes. Answer: D.