4. Bus and subway ridership in Washington, D. C. during the summer months is believed to be heavily tied to the number of tourists visiting the city. During the past 12 years the following data have been obtained: Year 1 2 |3|4|5|6 189 | Number of Tourists (1,000,000) 7 2 6 4 14 15 16 12 14 20 15 7 Ridership (100,000) 15 10 13 13 25 27 24 20 27 44 34 7 10 11 12 17 Develop the regression model from the data. What is the expected ridership if 10 million tourists visit the city