Final answer:
The total cost of Isabella's purchase of steak and turkey is $21.38.
Step-by-step explanation:
To find Isabella's total cost, we need to calculate the cost of the steak and the cost of the turkey separately, and then add them together.
Cost of steak = 2 ½ pounds x $3.14 per pound
= 2.5 x $3.14
= $7.85
Cost of turkey = 8 ⅛ pounds x $1.65 per pound
= 8.2 x $1.65
= $13.53
Therefore, Isabella's total cost is $7.85 + $13.53 = $21.38.