Answer:
a. r=d/t b. 800000/4=200,000 c.800/2=200 d.not sure km are used more often as theyre simpler to use but there is not much that i am basing this off of
Step-by-step explanation:
Unit rate because unit is referring to one so for example for every unit, there are 6 apples. The unit in the case would be a box
Y is parallel to S because angle 4 and angle 5 are alternate interior angles.
Hope that helps.