Whats the solution of the equation 8=f

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

What are the solutions of the following system? y=-2x^2 y=x-2