May someone help with this?

Help please! (If you could explain too that would be great, no need to tho.)
8) What is their rate of
change (speed) in Section
D (Hours 7-
10)? Remember to
include units
Remember rate of
change = slope = rise/run

May someone help with this Help please If you could explain too that would be great no need to tho 8 What is their rate of change speed in Section D Hours 7 10 class=