Help im really confuse about how to do this.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13

i'm a sophomore in connections, i'd recommend checking on jishka.com they have a large range of questions and answers from our school.