Morgan Lee is paid a commission of 3% on the first $100,000 of monthly sales and 5% on any sales above that amount. What commission did he earn if his sales for a month were $120,000?

in mathematics, a function is a relationship between two variables such that the value of one of the variables, called the dependent variable, is determined by the value of the other variable, called the independent variable. there is a specific term we use to describe the set of independent variables of a function.