Picture above (:

I have access to the answers, I just don’t know how to get to them.

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?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee