How do you solve these? I've been stuck on them for a while :)

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?

500 students went on a picnic trip 10 students chapter in each car how many cars were used for the picnic trip

The diagram shows how an image is produced by a plane mirror. which letter shows where the image will be produced?