Germaine measured the height of a plant, H, in centimeters (cm) as a function of days, d, since he planted it in his yard. The following table shows his data. d 0 2 4 6 8 10 12 H(d) 8.2 9.6 11.0 12.4 13.8 15.2 16.6 What is the rate of change of the function? 1.7 cm per day1 point 7 cm per day , , 8.4 cm per day8 point 4 cm per day , , 1.4 cm per day1 point 4 cm per day , , 0.7 cm per day