Answer:
Commission-An instruction/command given to a person or group of people.
It's 8x + 16y/2 + 4x - 4y :))
You left 20% tip. all you do is divide the tip,0.60, by the total , 3.
(p - 0.15p) + 1.99
This is the equation to solve.
p minus 15% of p, plus 1.99 for shipping costs.