Please help me with these questions. Thx

Answer the following questions using what you've learned from this unit. Write your responses in the space provided. 1. Two cars are starting from positions that are 20 miles apart. They are both headed for the same intersection, as depicted in the diagram below. Car A is traveling at 30 mph, and Car B is traveling at 45 mph. Which car will reach the intersection rst? intersection CarB Part I: Use the law of cosines to determine how far Car B has to travel to reach the intersection. (4 points) Part II: Use distance = rate - time to determine the time necessary for Car A to reach the intersection. Round your answer to the nearest hundredth of an hour. (2 points) Part III: Use distance = rate - lime to determine the time necessary for Car B to reach the intersection. (2 points) points) Part IV: Which car reaches the intersection first, and by how many hours? (4