3) A softball team is ordering pizza to eat after their tournament. They plan to
order cheese pizzas that cost $6 each and four-topping pizzas that cost $10
each. They order cheese pizzas and four-topping pizzas.
Which expression represents the total cost of all of the pizzas they order?
A. 6 + 10
B. c + f
C. 6c + 10f
D. 6f + 1