Select all of the situations that could be modeled by a linear equation.
A: The Barton family is driving at a rate of 62 miles per hour.
B: Mr. Dominguez invested $1000. This money is growing at a rate of 4% per year.
C: A tree was 10 feet tall when purchased. It is growing at a rate of 2 feet per year.
D: Time dropped a coin off a bridge. It is falling at a rate of 9.8 meters per second squared.
E: The amount of people in a stadium is decreasing at a rate of 45% every 10 minutes.
