You and your friends each eat 2 slices of pizza for dinner, there are 8 slices in a pie, and the delivery fee is $5. You must tip 10% on the pizza order but not on the delivery fee. Express the total cost in an expression.
A)y = 2 x + 5
B)y = 2.2 x + 5
C)y = 0.2 x + 5
D)y = 2 x

Question

Quizplus · Accepted Answer

The cost of the pizza would be 2 slices per person x number of people, or 2x. We must then add the delivery fee of $5, giving us 2x + 5. To find the tip, we would take 10% of the cost of the pizza (2x) only, so the expression becomes 2.2x. Therefore, the total cost expression is y = 2.2x + 5. Choice B is the correct answer.

You and Your Friends Each Eat 2 Slices of Pizza