wuestion 15 Kim Isabel is a software saleswoman. Let y represent her total pay (in dollars). Let x represent the number of copies of Math is Fun she sells. Suppose that x and y are related by the equation y=2200+120x. Answer the questions below. Note that a change can be an increase or a decrease. For an Increase, use a positive number. For a decrease, use a negative number. What is the change in Isabel's total pay for each copy of Math is Fun she sells? $0 What is Isabel's total pay if she doesn't sell any copies of Math is Fun? $0