5) 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

a) After how many weeks will Joy and Cullen have the same amount of money in their money boxes?

b) What is that amount?

Question

Mathematics

Carmelo Frey

20 January, 19:46

5) 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

a) After how many weeks will Joy and Cullen have the same amount of money in their money boxes?

b) What is that amount?

+4

Answers (1)

Know the Answer?

Madeleine Rice · Answer 1

Week 7 And the amount is 230$

You can check it by getting a Graphing Calculator and Inserting the Equations into y = And Go down the list where x=7 and the two variables are the same Number