What does c = 331t and t = (1/100)c equal?

Which expression is equivalent to 4 square root 6 divided by 3 root 2

Can someone me i’m confused. will give brainliest and a whole bunch of points

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?