Chapter 2.3, Problem 57P

To determine

(a)

To find:

What does the company hope is true about the sign of $f\text{'}$ ?

To determine

(b)

To write:

The meaning of statement $f\text{'}\left(100\right)=2$ and $f\text{'}\left(100\right)=0.5$.

To determine

(c)

To analyze:

If $f\text{'}\left(100\right)=2$, should the company spend more or less than $100000 on advertising? What if $f\text{'}\left(100\right)=0.5$ ?