Jacqueline leaves city A at 2:00 p.m. and drives at a constant speed, traveling west on I-90. She passes city B, 40 mi from city A, at 2:50 p.m. (a) Find a linear function d that models the distance (in mi) she has traveled after min. (b) Draw a graph of d. d 110 100 90 80 70 60 50 30 20 10 110 100 90 80 70 60 50 30 20 10 O 20 40 60 80 100 What is the slope of this line? [ ) (c) At what speed (in mi/h) is Jacqueline traveling? [_ ] mi/h 110 100 90 80 70 60 50 30 20 10 20 40 60 80 100 120 110 100 90 80 70 60 50 30 20 10 20 40 60 80 100 120