Imani earned grades of 95, 87, and 83 on the first 3 exams in the class. Each of these exams is worth 20 percent of the total grade in the class and the class is worth 40 percent of the class grade (there is no extra credit possible and these are the only graded assignments in the class). What grade must Imani earn on the class to achieve a final course average of 93 (which will guarantee that she gets a letter grade of A in the class)?