Answer:
<em>Answer is </em><em>given below with explanations</em><em>.</em><em>,</em>
Step-by-step explanation:

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The answer is 4 because 1 6/8 + 2 3/8 =4 1/8 so it would round to 4
A polygon is plane<span> shape with <em><u>straight</u></em> sides. Therefore, a pentagon is a polygon!</span>
X would be equal to time and y be equal to distance
The y axis would be measuring distance and the x axis would be measuring time. Another name for a speed graph is the distance time graph. The y axis would be measuring the distance covered by the truck in meters and the x axis would be for the time it takes to reach that distance in second.
B) 2-6 would represent contact motion, meaning the vehicle is at rest. The time would be increasing from 2-6 to however the distance remains the same which is 20m