David wants to rent a bicycle for a couple of hours to explore the city. The price of the bike rental, $(P)$, depends on the time the bike was out, $(t)$. The price consists of a base charge of $\$8$ and a variable hourly cost. The graph of the function is shown below. **Complete the following sentences below based on the graph of the function.** * The hourly charge is $\$$[[☃ math-keypad 1]] per hour for the first $3$ hours. * The rate then drops to $\$$[[☃ math-keypad 2]] per hour until the end of the $6^{\textrm{th}}$ hour. * The hourly rate drops further to $\$$[[☃ math-keypad 3]] per hour between the $6^{\textrm{th}}$ and $10^{\textrm{th}}$ hours. * The maximum price of the bike rental is $\$$[[☃ math-keypad 4]].