Charles and Amy are summer interns at a state park. They are helping to plant trees in an area where there was a forest fire. Charles's uncle owns a tree nursery and is willing to donate a 3-foot tall tree and will grow 1.5 feet per year. Amy goes to another nursery, but is only able to get tree seeds donated. According to the seed package, the trees will grow 1.75 feet per year. Charles plants the tree and Amy plants the seed the same day. Amy thinks that even though her tree will be much shorter than Charles tree for the first several years, it will eventually be taller because it grows more each year, but she does not know how many years it will take for her tree to grow as tall as Charle's tree.