Answer
(a) The following is rough graph of T as a function of t based on the values given in the readings.
(b) $74^{\circ} F$
Work Step by Step
(a) The readings are plotted on the graph and joined together. The x-axis, t, is measured in hours from midnight and the y-axis, T, is measured in degrees Fahrenheit.
(b) Using the graph, we can see that at 8:00 AM the temperature is $70^{\circ} F$. We can also see that at 10:00 AM the temperature is $78^{\circ} F$. In between them, at 9:00 AM, the graph has a value of $74^{\circ} F$.
