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.Hour of the dayVehicles parked

(thousands)

9 A.M.6.1

11 A.M.7.6

1 P.M.7.7

3 P.M.6.6

5 P.M.4

(a) Use regression to find a quadratic model for the data. (LetVbe the number of vehicles andtbe the time in 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 at4P.M.,and then estimate that value. (Round your answer to two decimal places.)

V=

thousand

(c) At what time of day is the number of vehicles parked at its greatest?

12:13 P.M.

2:26 P.M.

10:13 P.M.

10:04 A.M.

12:26 A.M.