PLEASE SOMEONE HELP WHAT IS THIS-

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

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?

Use your knowledge of the binary number system to write each binary number as a decimal number. a) 1001 base 2= base 10 b) 1101 base 2 = base 10