Create an application that determines the total due including sales tax and
shipping. Allow the user to input any number of item prices. Sales tax of
7.75% is charged against the total purchases. Shipping charges can be determined
based on the number of items purchased. Use the following chart to determine
the shipping charge. Display an itemized summary containing the total purchase
charge, number of items purchased, sales tax amount, shipping charge, and grand
total.
fewer than 3 items          $3.50
3 to 6 items                    $5.00
7 to 10 items                  $7.00
11 to 15 items                $9.00
more than 15 items         $10.00