$22.50
You can get this by dividing the new total by 116%, which is how much of the bill was paid.
You used Order of Operations. I hope this helped ^^
A rational number is any number that can be expressed as a ratio of two integers (hence the name "rational"). For example, 1.5 is rational since it can be written as 3/2, 6/4, 9/6 or another fraction or two integers. Pi (π) is irrational since it cannot be written as a fraction.
4 dollars and seventy six cents will be the total
Each day it decrease $2. So just multiply $2 x 4 days. It changed a total of $8.