A shirt is on sale for 15% off the regular price. Josef determines the amount he will save by first calculating 15% of the regular price, s, and then subtracting that amount from the
regular price of the shirt. Josef then determines the amount he will pay. Select all of the
expressions that could be used to calculate the amount he will pay for the shirt on sale?
a) s-0.855
b) 5-0.15s
c) 0.855
d) 1.155
e) (1 +0.15)s
f) (1 -0.15)s