What is the first quartile of this data set?
11, 12, 15, 16, 17, 19, 22, 24, 29, 33, 38

A. 11

B. 29

C. 19

D. 15

Pranav and molly are selling pies for a school fundraiser. customers can buy blueberry pies and pumpkin pies. pranav sold 6 blueberry pies and 4 pumpkin pies for a total of $106. molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90. find the cost of each of one blueberry pie and one pumpkin pie