Given: 2 < a < 5 and 3 < b < 7, find: ? < b - 2a < ? PLEASE HELP ASAP

What is the vertex form of f(x) = x2 + 6x + 3

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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?