Final answer:
Initially, there were 32 pieces of corn casserole. After guests ate half, 16 pieces remained. Finally, the dog ate 3 dropped pieces, leaving 13 pieces.
Step-by-step explanation:
You asked how many pieces of corn casserole were left after a dinner event. Initially, you cut the corn casserole into 4 rows with 8 pieces in each row, which totals to 32 pieces. Since half was eaten, that leaves us with 16 pieces. After your dog ate 3 pieces that were dropped on the floor, you were left with 13 pieces of corn casserole.
Here's the step-by-step breakdown:
Total pieces made = 4 rows × 8 pieces per row = 32 pieces.
Half eaten by guests = 32 pieces / 2 = 16 pieces remaining.
Pieces eaten by dog = 3 pieces.
Total pieces remaining = 16 pieces - 3 pieces = 13 pieces.