The trend equation y^ = 2050 + 12x has been de veloped for the number of vehicles using the ferry service at a national seashore each year. (The years have been coded so that 1993 corresponds to x = 1.)
If the seasonal indexes for quarters I through IV are 55.0, 130.0, 145.0, and 70.0, respectively, estimate the usage volume for each quarter of 2010.