Code / Write a function named calcDiscount that calculates the discount on purchases from an on-line pants store. All pants on the site sell for $20. Quantity discounts are given as follows: Quantity...

Code  / Write a function named calcDiscount that calculates the discount on purchases from an on-line pants store.

All pants on the site sell for $20. Quantity discounts are given as follows:

Quantity Discount 1-9 none, 10-19 12%, 20-49 23%, 50-99 34%, 100 or more 45%.

Your function should accept the number of pants purchased as an argument and return the total cost after the discount.

Make sure returned value is formatted to *2* decimal places, as currency is normally displayed.

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