The average salary for 30 top quarterbacks in a football league in a recent year was just over $13,000,000 A linear model to predict Salary from Total QBR (an overall measure of performance based on game statistics) found that Salary = 139,834 73 +215,130.89x Total QBR. Complete parts a through p below a) What is the explanatory variable? The explanatory variable is Total QBR because Total QBR is used to predict Salary b) What is the response variable? The response variable is Salary because Total QBR is used to predict Salary ci What does the slope mean in this context? In this league, top quarterback salaries are, on average, about 215130,89 dollar(s) higher for every point Increase in Total QBR (Type an Integer or a decimal. Do not round.) dj What does the y-intercept mean In this context? is it meaningful? The y intercept is the average of a quarterback in this league whose meaningful because it h (Type an ininger or a decimal. Do not round ) im r