Fill in the missing statements and reasons

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?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

Which table represents a linear function? i'll give brainliest to first answer ^'^