Solve the equation y-3.2=-4.7

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?

Need showing work for this problem 56.25 ×25.80

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2