Answer:
Jay's average score is 70.5
Step-by-step explanation:
The grades in a university are calculated as follows: 30% from class assignments, 35% from the final exam, and 35% from the field project.
Jay scores 75 out of 100 in class assignments, this means the average will be = 
Jay scores 65 out of 100 in the final exam, average is = 
Jay scores 72 out of 100 in the field project, average is = 
Total average =
≈ 70.5
Therefore, Jay's average score is 70.5.