a. Write three equivalent expressions that can be used to find the final price of an item costing g dollars that is on sale for 15% off and charged 7% sales tax.
b. Using all of the expressions, determine the final price for an item that costs $75. If necessary, round to the nearest penny.
c. If each expression yields the same final sale price, is there anything to be gained by using one over the other?
d. Describe the benefits, special characteristics, and properties of each expression.