Grading Rubric - Lab 3 Lab Value: 70 points ================================================ Part 3 - Makefiles (70 points): Item 7, Makefile-1 (6): Item 8, Makefile-2 (6): Item 9, Description of operation (10): Item 10, Makefile-3 (6): Item 11, Makefile-4 (6): Item 12, Description of operation (16): Question 13 (10): Screenshot 14 (10):