First figure out his total bill by adding up what he buys.

Now subtract the discount of $20 since his purchase was above $100:
The first option is correct I did this before hope this helps
Answer:
Infinitely many
Step-by-step explanation:
2x + 2y = 8
x + y = 4
4x + 4y = 16
x + y = 4
Basically they represent the same line.
So all points on the line will satisfy both equations.
Hence infinitely many solutions
Omggg hiii you divide both sides by 14 and your answer would be 6