The graph shows how much a plant grew after it was purchased. Which statement is not correct?

Every 10 days, the plant grows 1 centimeter.
The plant grows 0.1 centimeter every day.
The plant grows 0.5 centimeter every 5 days.
The plant grows 1 centimeter every day.

picture is down below

Question

The graph shows how much a plant grew after it was purchased. Which statement is not correct?

Every 10 days, the plant grows 1 centimeter.
The plant grows 0.1 centimeter every day.
The plant grows 0.5 centimeter every 5 days. 
The plant grows 1 centimeter every day.

picture is down below

anonymous · Answer

https://static.k12.com/eli/bb/1459/3_86584/2_60448_6_86807/817b5cbbe3cf53cc66cf54ef737251188317b927/media/e73cce5484c92d98606fa911526b02f92f7698b8/mediaasset_327827_1.gif

anonymous · Answer

D is incorrect

anonymous · Answer

This is because the rate on the graph shows the plant grew 1 cm in 10 days. So you can cancel out A. Then, if you divide that to find the unit rate, you will see that it grows 0.1 every day so B can be canceled out too. Then, if you multiply the unit rate, 0.01, by 5 you get 0.5 so C can be cancelled out too. Then you are left with D.