Question

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

@satellite73

Answer 2

@triciaal

Answer 3

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