Alternate exterior angles are congruent which angle forms a pair of alternate exterior angles with angle 2?

Write the slope intercept equation for line ab.

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?

This question is hard for me to answer can you me. the question is find the value of x.