You can
put this solution on YOUR website!Cost = 0.07w + 13.3 I am assuming that w=number of wing nuts.
C = 0.07(375) + 13.3
C = 26.25 + 13.3
C = 39.55 I am assuming that the answer is in dollars.
Average cost = total cost/number of wing nuts
AC = 39.55/375 = 0.1054666 cents
Hope that is right.