HELPP MEE THIS MY THIRD TIME ASKING THIS QUESTION: What is the unit rate of the Rosk Construction

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?