Final answer:
Wesley paid $15.30 for the parmesan cheese.
Step-by-step explanation:
To find out how much Wesley paid for the piece of parmesan cheese, we need to multiply the weight of the cheese by the price per pound.
First, we need to convert 1 ⅛ pounds to a decimal. ⅛ is equal to 0.125, so 1 ⅛ would be 1 + 0.125 = 1.125 pounds.
Now, we can multiply the weight by the price per pound: 1.125 pounds × $13.60/pound = $15.30.