First, find the total number of feedings for Thursday through Saturday by multiplying the number of days, 3, by the number of feedings per day, 2.

Then, add the 1 feeding on Sunday.

Finally, set the expression equal to the variable t, the total number of times Jessica's pets need to be fed.

First, find the total amount of gift card money by multiplying 4 by $10.

So, Cherie has $40 in gift card money. To find how much she will have left after spending $23, subtract $23 from $40.

So, Cherie will have $17 left in gift card money.