2. suppose that in the sales tax example, we wanted the output to be the total cost of the piece of merchandise instead of just the tax. let c be the name of the cost function. use the sales tax rate that is in effect where you live. (if you happen to live in a location with no sales tax, use 8%.)
2. if you purchase a cd priced at $13.79, determine the total cost. use functional notation to represent the cost.
3. if you purchase an item costing $59.95, determine the total cost. use functional notation to represent the cost.
4. if the price of an item is p dollars, describe in words how you calculate c(p), the cost of the item.
5. determine a formula for c(p). simplify your formula as much as possible.