Question

Mark is also trying to save money. He already has $3.00 saved and puts $1.00 per week away in

his piggy bank. This can be represented by the equation y = x + 3

¿Will Jen or Mark save $20.00 first? Justify your reasoning.

Answer 1

Mark will save $20 in 17 weeks, but there is no equation for Jen.

Explanation:

y = x + 3

1) replace y with $20

20 = x + 3

2) subtract 3 from both sides

17 = x