### Home > CALC > Chapter 4 > Lesson 4.3.1 > Problem4-99

4-99.

$s'(t)=\frac{ds}{dt}=\text{ instantaneous }\frac{\Delta \text{feet}}{\Delta \text{time}}$

$\frac{\text{sales}}{\text{hour}}$

indicates a rate graph and an integral is an area function.

Be sure to mention the significance of the bounds.

Refer to the hints in part (b).