The table below shows the number, in thousands, of vehicles parked in the central business district of a certain city on a typical Friday as a function of the hour of the day Vehicles parked...

Extracted text: The table below shows the number, in thousands, of vehicles parked in the central business district of a certain city on a typical Friday as a function of the hour of the day Vehicles parked (thousands) 6.1 Hour of the day 9 A.M. 11 A.M 7.6 1 P.M. 3 Р.М. 5 P.M. 7.6 6.5 3.8 (a) Use regression to find a quadratic model for the data. (Let V be the number of vehicles and t be the time hours since midnight. Round the regression parameters to three decimal places.) V= (b) Express using functional notation the number of vehicles parked on a typical Friday at 2 P.M., and then estimate that value. (Round your answer to two decimal places.) thousand