One spring day, Zachary noted the time of day and the temperature, in degrees Fahrenheit. His findings are as follows: At 6 a. m., the temperature was 50° F. For the next 3 hours, the temperature rose 4° per hour. For the next 4 hours, it rose 2° per hour. The temperature then stayed steady until 6 p. m. For the next 3 hours, the temperature dropped 3° per hour. The temperature then dropped steadily until the temperature was 58° at midnight. On the set of axes below, graph Zachary's data.