The sales tax in one state is 5%. Write a function rule for finding the total cost of an item with selling price x. The
A f(x) =5+ in $111.05
B f(x) = 1.05x ,S115.50
C f(x) = x - 5, 108.95
D f(x) =0.05x 5.50
Out of A to D which one is the correct answer
B f(x) = 1.05x ,S115.50 is the correct answer.
This function rule correctly calculates the total cost of an item with a selling price of x by adding the 5% sales tax to the original price. The total cost should be calculated as 1.05 times the selling price x.