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 $8 and a variable hourly cost. The graph of the function is shown below. • The hourly charge is ($ ) per hour for the first 3 hours.

• The rate then drops to ($ ) per hour until the end of the 6th hour.

• The hourly rate drops further to ($ ) per hour between the 6th and 10th hours.

• The maximum price of the bike rental is ($ ).
Please help