The cost of having a package delivered has a base fee of $10.80. Every pound over 5 lbs cost an additional $0.41 pe pound. Write an equation that expresses the cost C in terms of w, the total weight in pounds of a package weighing over 5 lbs.
a. C=10.8w+0.41
b. C=0.41w+10.8
C. C=0.41(w-5)+10.8
d. C=0.41w+12.85