Find the value of k in the data set so that f(x) is a linear function. -2 2 5

-7

&*

f(x)

-15

k

3

9

O k= -10

O k=5

O k = 10

O k= -5

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