Write 2.4 as a mixed number and as an improper fraction.
Write your answers in simplest form.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

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?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?