Graph of position versus time with position on y axis from 0 to 80 miles and time on x axis from 0 to 5 hours. segment 1 goes from 0, 0 to 1, 40. segment 2 goes from 1, 40 to 2, 40. segment 3 goes from 2, 40 to 3, 60. segment 4 goes from 3, 60 to 4, 75. segment 5 goes from 4, 75 to 5, 75.

study the graph shown. it is a graphic of a car trip taken by karen and her mother. the starting position (0,0) is their home.

calculate the average speed of the car during the first hour of the trip: 1 miles/hour, 5 miles/hour, 40 miles/hour or 25 miles/hour? show your work.