Chapter 1.3, Problem 20E

To determine

(a)

To find:

The distance between home to school.

To determine

(b)

To find:

The time when you reach school.

To determine

(c)

To find:

The time to cover the distance of $900\text{yards}$.

To determine

(d)

To find:

The average rate of change in D over the intervals from $t=0$ to $t=3$, from $t=3$ to $t=6$ and from $t=6$ to $t=9$.

To determine

(e)

To illustrate:

The solution find in part (d).

To determine

(f)

To find:

The time when you walking back west the fastest.