This graph shows the distance that a robot walks. What is the robot's speed? Walking Time and Distance Distance (feet) 90 80 70 60 50 40 30 20 10 0 A. 40 feet per minute B. 30 feet per minute C. 10 feet per minute D. 20 feet per minute 1 2 3 4 5 6 Time (minutes). The answer is C.