Below is an "oracle" function. An oracle function is a function presented interactively. When you type in an t value, and press the --f--> button the the value f(t) appears in the right hand window. There are three lines, so you can easily calculate three different values of the function at one time The function f(t) represents the height in feet of a ball thrown into the air, t seconds after it has been thrown. Calculate the velocity 0.8 seconds after the ball has been thrown.

The velocity at 0.8 = ?

now i know that you need the calculator thing to help solve this but if you could just tell me how to go about it that would be great. Also some helpful number may be at 0.8 seconds the height is 30.06 at 1 second the height is 28.3at 0 seconds the height is 24.3