The table shows the average daily high temperature in a city each each week for eight weeks after the first day of spring. Which of the following is an appropriate line of fit for the data? Use the line of fit to find the approximate temperature on the first day of spring and the average rate of change in temperature. Week, 2 1 2 3 4 5 6 7 8 Average Daily High Temperature, y (°F) 56 57 59 61 62 64 66 68 Oy= 22 + 56 Oy= -1.72 +54 Oy= 2.62 +56 Oy= 1.7x + 54 The temperature on the first day of spring was about E. The average rate of change in temperature is about °F per week.