Point a is at 12, and point d is at 56. point c is midway between a and d and point b is midway between a and c which of these is the coordinate of b?

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

Average acceleration: i have no idea how to do this.

Choose the more precise measurement. 26.4 cm or 8.39 cm