spaces pre Bus Maintenance (Questions 1 through 3) The regional transit authority wants to study the age of their buses and their annual maintenance cost. The following table is a part of the results of a Regression Analysis obtained from flata on a sample of 10 buses. R Square 0.8725 Coefficients Intercept 220.00 Age 131.67 Help the regional transit authority predict the annual maintenance cost in dollars given the age of a bus in years. 1. Develop the estimated regression model () = bo + b,x). (Rou d to two decimal places.) 2. State and interpret b, . 3. Use the model to predict the annual maintenance cost for a bus that is 6 years old. (Round to the nearest cent.)