Chapter 4.4, Problem 66AYU

Taxiing Speed A study of a new keyboard layout for smartphones found that the average number of words users could text per minute could be approximated by

$N\left(t\right)=\frac{32\left(t+2\right)}{t+5}$

Where $t$ is the number of days of practice with the keyboard.

What was the average number of words users could text with the new layout at the beginning of the study?

What was the average number of words users could text after using the layout for $1$ week?

Find and interpret the horizontal asymptote of $N$.