Lily has a $100 gift card to her favorite pastry shop. she spends $4 a day at the shop for the next 12 days

Make a table X = each day y = amount of money X/y 0/100 1/96 2/92 3/89 4/85 5/81 6/76 7/72 8/68 9/64 10/60 11/56 12/52

You would need to multiply $4 multiplied by the 12 day which will equal $48. Sence $48 tells the amount of money waisted, you need to subtract $100 - $48 and it will give you $52.

So the answer is $52