URGENTTT!!!!
Step 6: Adding and subtracting with rational numbers
a) Alex, an eighth grader, and Eric, a seventh grader, need to determine who came closer to their grade’s state record for the triple jump. Alex jumped 38 feet 11 2/3 inches and Eric jumped 36.89 feet. Who was closer to the state record if the eighth-grade record is 40.17 feet, and the seventh-grade record is 38 feet 1 3/5 inches? (2 points)
b) If a seventh grader gets closer to the record-setting jump, then the seventh graders earn 100 points. If not, the eighth graders earn 100 points. Which grade should be awarded 100 points**? (1 point)
Step 7: Using the commutative and associative properties of multiplication to simplify multiplication of two rational numbers
The event coordinator asks you to determine how many students participated in the track-and- field day. The total number of students in seventh and eighth grade combined is 595.
a) If 3/5 of the 595 students are seventh graders, and 5/8 of them participated in the competition, about how many seventh graders participated in the competition? Describe the process you used to find your answer. (2 points)
b) If 2/5 of the 595 students are eighth graders, and 7/8 of them participated in the competition, about how many eighth graders participated in the competition? Describe the process you used to find your answer. (2 points)