**Problem 1** Find the average rate of change of $latex \displaystyle f(x)=ln (x)$ over [2, 4] to four decimal places.

**Problem 2** Find the average rate of change of $latex \displaystyle f(x)= {e}^{x}$ over [1, 3] to four decimal places.

When you calculate the rate to four decimal places, you should write the numbers in the quotient to FIVE decimal places to make sure there are no rounding errors.