What equation is the inverse of y = 7x2 – 10?

Acircle has a circumference of 28.36 units what is the diameter of the circle

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.

Can someone answer this question for me