Does anyone know how to do this?

An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be modeled by the function d(t)0.82. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

On a architect's drawing of a house, 1 inche representa 1.5

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11