Dollar Store

A store sells all items for $$1.$ Customers buying $10$ or more items receive a $5\%$ discount. Additionally, there is $7\mathrm{.}5\%$ sales tax. Write a program that prompts the user for the number of items purchased, and calculates the total cost before and after tax.

Here is an example session:

Enter number $of$ items: $10$

Net Cost: $9\mathrm{.}50$

Tax: $0\mathrm{.}71$

After tax: $10\mathrm{.}21$

As part of your program, define and use these functions: