Abi has 20 cents. She bought x pencils for 3 cents each. If y is equal to the number of cents left. write an equation that shows the dependence of y on x. What is the domain of the function

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?