11. A local community group, which, to date, t=0, has planted 25 trees at public parks in the Acadiana area and is continuing to beautify the area's parks. Their linear growth model yields an annual trend, y/x, of .5 trees per year. a. How many trees are expected to be attributable to the group in 12 years, t=12 ? b. How many trees are expected to be attributable to the group in 20 years, t=20 ? c. How many trees are expected to be attributable to the group in 35 years, t=35