Final answer:
To determine the number of pieces of pie you froze, multiply the number of whole pies by the number of pieces in each whole pie and add the number of pieces in the leftover fraction of a pie.
Step-by-step explanation:
To find the number of pieces of pie you froze, you need to determine how many pieces make up 7 1/4 pies. Each pie is cut into 8 equal pieces, so to find the number of pieces in 7 1/4 pies, you need to multiply 7 by 8 and add the number of pieces in the 1/4 pie. 7 multiplied by 8 equals 56, and to find the number of pieces in 1/4 pie, you multiply 1 by 8 and divide by 4, which equals 2. So, in total, you froze 56 + 2 = 58 pieces of pie.