Answer :

bmichael1
$2 is the correct answer add to get starting total then divide by fifteen to get how much per week
trombonebookworm
Let's set the amount of money that Sue put in each week as x.

The amount of money she would have saved in 15 weeks is 15x. However, she took 9 dollars out and had 21 left over.

Set up an equation.
15x-9=21
15x=39
x=2

Sue put in $2 every week.

Hope this helps!

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