Chapter 5.4, Problem 41E

a)

To determine

To sketch: The graph of $f\left(t\right),f\text{'}\left(t\right),f\text{'}\text{'}\left(t\right)$

b)

To determine

To find the number of viewers is expected at $7$ hours.

c)

To determine

To find: The rate is the level of views increasing after $1$ hour.

d)

To determine

To find: while the level is decreasing at the number of views expected to reach $20$ thousand.

e)

To determine

To find: The largest number of viewers at what time

f)

To determine

To find: The level of views decreasing fastest.