Answer:
48 plants.
Step-by-step explanation:
On one side there would be 21 * 12 inches / 21 inches =- 12 plants.
There are 4 sides so that makes 48 plants.
The plotted point will be reflected across the y-axis.
I believe the answer is C. If you were to plug in 1 for t, you would get h=22. Thus, the max height is 22 feet, and the time it took to get there was 1 second.