Taxes, family, and jobs are easy. The hardest part about growing up is learning how much pizza to order for a group. But I've been gathering data! Below is how many large pizzas groups of various sizes ate.
In predicting future pizza orders based on the number of people in the group, the most appropriate model to use would be…
(A) A quadratic model that underestimates the number of pizzas needed 
(B) A quadratic model that overestimates the number of pizzas needed
(C) A linear model that underestimates the number of pizzas needed
(D) A linear model that overestimates the number of pizzas needed
Number of People
Number of Pizzas
10
2.5
15
4
21
5.5
38
13
44
16.5
55
20
58
20.5