If Cynthia's friend would have had her birthday party on Thursday night, does the maximum number of games Cynthia can play change?

For how answer my question this will be the last question can you answer in math subject

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?