#write a function final_price
#that has two parameters, choice and tax and function returns final price 
#for one item based on the following menu
#1. Regular Hamburger $1.50 
#2. Regular Cheeseburger $1.75 
#3. Fish Sandwich $2.50 
#4. Half-pounder with cheese $2.75 
#5. French Fries $0.99 
#6. Large Soft Drink $1.25  

#write a program that reads tax in the 
#state the restaurant is in and the total number of choices, and asks 
#user to enter the choice and the number of items for that choice
#the program prints the total purchase

#Example: 2 choices, tax = 7
#choice 3, 2 items, and choice 6, 2 items 
#2.50*2*(1.07)+1.25*2*1.07

#Example: 3 choices, choice 1 1 items, choice 2 3 items, choice 6 4 items
#1.50*1.07+1.75*3*1.07+4*1.25*1.07