The data in the table is the number of bus and subway ridership for the summer months in London. During the past 6 years, the following data have been obtained Ridership Year ji_n millions} 1 1.5 1 .0 l .3 2 3 4 1.5 S 6 2.1 2.6 |_ Using linear trend analyses to predict the number of ridership in years 9' as function of time