So the best I could come up with is paper-rock-scissors; the operation takes two inputs and puts out the winner (assuming they are different).
So (paper rock) scissors= paper scissors = scissors,
But paper (rock scissors)= paper rock = paper.
This is a good example because it shows that associativity matters even outside of math.
Answer:
Step-by-step explanation:
Friends lunch=8+8+8=$32
Blake's lunch=$6
32+6=$40 total
c-24
a-156
a=180-24( angles on s straight line)=156
c= 24 opposite angles
124