Given from the image the recorded hourly temperature in °F between 9 AM and 6 PM:
a) The greatest temperature increase occur between 10am and 11am.
b) The temperature at 10am is 73°F.
c) The temperature was 78°F by 12:30pm and 2pm.
d) The warmest temperature reached is 79°F.
e) There is a constant temperature (i.e the temperature did not change) between 11am and 12pm.