Answer:
Option C). Unit rate = 50
Step-by-step explanation:
In the graph attached we will find two points which lie on the straight line.
Let the point be at t = 1 and t = 2
For these two points coordinates will be (1, 50) and (2, 100)
Now to calculate the rate we will find the slope of the given line
slope = (y - y')/(x - x')
By putting the values of (x, y) and (x', y')
slope = rate = (100 - 50)/(2 -1) = 50/1 = 50
Therefore the answer is unit rate = 50
