Consider the function as representing the value of an ounce of palladium in U. S. dollars as a function of the time t in days.

R(t) = 240 + 40t - t3; t = 2

Find the average rate of change of R(t) over the time intervals [t, t + h], where t is as indicated and h = 1, 0.1, and 0.01 days

Then there is a table setup like this:

h 1 0.1 .01
ave rate ?

Solving for the question marks

Hence, estimate the instantaneous rate of change of R at time t, specifying the units of measurement.