Modeling Linear Relationships Quiz

A plant grows at a constant rate. After 1 week, it is 11 cm tall, and after 3 weeks, it is 15 cm tall. If the plant was initially 9 cm tall, determine the rate of change of the plant's height per week.

A water tank is being filled at a constant rate. After 1 hours, it contains 30 gallons, and after 2 hours, it contains 40 gallons. If the tank initially had 20 gallons, what is the rate of change of the water level?

A train travels at a constant speed. After 1 hour, it has traveled 60 miles, and after 3 hours, it has traveled 180 miles. If the train started from a station 0 miles away, what is the speed of the train?

A cyclist travels at a constant speed. After 1 hours, she has traveled 15 miles, and after 2 hours, she has traveled 30 miles. If she started from a point 0 miles away, determine the rate of change of her speed.