The perimeter of a square painting is 296 centimeters. how long is each side

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

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?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g