A tree's height, in feet, can be modeled by the function , where is the number of years since it was planted. Which of the following is the best interpretation of the -intercept of the graph of ?
The tree grows 3 feet per year.
The tree was 5 feet tall when it was planted.
The tree will be 8 feet tall after 1 year.
The tree will stop growing after 5 years.
