Values that represent a linear function are shown in the table below. x y
−5 −8
−7 −16
−9 −24
−11 −32
−13 −40
What is the slope of this linear function?
A
4

B
14

C
−18

D
−8

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?