Monica decides to throw a party for his class. He buys 3 pizzas at $12.00 a pie, and three 2-liter bottles of soda for $5.00 each. Assuming tax is included in the cost of the pizza and soda, ifs he pays with three $20.00 bills, what is his change?

Exercise 7

Juanita can choose between a sales job paying a fixed salary of $2000 per week or a sales job in which she gets paid a $62 commission on each sale. If she expects to sell 30 units per week, how much more will she make if she chooses the job paying according to a fixed salary?