Final answer:
Ms. Garrett had 40 guests at her birthday party, and after each guest took 2 pieces of cake from the 88 slices she had, there were 8 slices left.
Step-by-step explanation:
In this scenario, Ms. Garrett had 40 guests at her birthday party and she cut her cake into 88 slices. Each guest had 2 pieces of cake.
To find out how many slices were left, we need to multiply the number of guests by the number of pieces each guest had, which is 40 x 2 = 80 slices.
Since Ms. Garrett had 88 slices in total, we subtract the number of slices taken by the guests from the total number of slices, which gives us 88 - 80 = 8 slices left.