3. You have a dataset that contains two variables of interest: Average salary and number of years employed at current position. You develop the following regression equation: Salary = 40,550 + 1525(number of years) a. Ifyou increased the number of years that a person worked by 3, how much would their salary increase by? (1 point) Answer: b. What shape would you expect the least-squares regression line to have? (1 point) Answer: c. How many years would someone have to work to reach a salary of 100,000? (1 point)