Sounds like "formulas"! y = ax^2 + bx + c involves the variable x and the constants {a, b, c}. The "2" indicates "squaring function."
if you want to come bird 5 pints to 3 quarts it's 2.5 quarts
Transaction 3 - $143
transaction 4 - $-86
transaction 5 - $86
The answer is 10...............