Owing in part to an aging population and the squeeze from carbon-cutting regulations, the percentage of small and lower-midsize vehicles is expected to increase soon. The function

gives the projected percentage of small and lower-midsize vehiclestyears after 2010.

1. What was the projected percentage of small and lower-midsize vehicles in 2011?
2. What is the projected percentage of small and lower-midsize vehicles in 2020?
3. Show thatfis increasing on the interval (0, 10) and interpret your results.