if it's 12 or more dollars than 20-12=8 which can be your greatest number and 0 being the lowest range based on the actual amount spent on onions. make sure to put a line under the inequality signs to show that it can also be equal to the number.
The definition of input is What is put in, taken in, or operated on by any process or system so the data put into a computer, calculator, math problem is the input