For this case, what we must do is calculate the speed of the runner.
We have then that the speed is given by:

Where,
d: distance
t: time
Substituting values we have:


Answer:
the runners unit rate is:

Slope-
m = 0.5
--
Midpoint-
(-0.5, -3)
--
Distance between two points-
4.47213595
--
Equation of the line-
y = 0.5x - 2.75
--
y intercept-
b = -2.75
--
Graph-
51=?
60 100
Then you cross-multiply the 51 and the 100 and get 5,100.
Next you take the 5,100 and divide it by the 60 which gives you your final answer of 85%.
The answer is 49
Hope this helps
48 divided 12 equal 4 ⇒ 4 times of 12 to go to 48