plz help me!!! I'm make u the brainlyest!!!! plzzzz helpppp A Car makes a 75-mile trip South in 1 hour. For the first 30 minutes, it drove 50 mph. For the second 30 minutes, it drove 100 mph. Answer the following questions: a. Instantaneous Velocity at minute 15: b. Instantaneous Velocity at minute 45: c. Average velocity of the entire trip in mph: