The managing director of a consulting group has the accompanying monthly data on total overhead costs and professional labor hours to bill to clients. Complete parts a through c. Click the icon to view the monthly data. . . . a. Develop a simple linear regression model between billable hours and overhead costs. Overhead Costs = + ( ) x Billable Hours (Round the constant to one decimal place as needed. Round the coefficient to four decimal places as needed. Do not include the $ symbol in your answers.)Overhead Costs Billable Hours $385,000 2,000 $435,000 3,000 $465,000 4,000 $519,000 5,000 $580,000 6,000 $595,000 7,000