A mean average of 60 on seven exams is needed to pass a course. On her first six exams, Sheryl received grades of 51, 72, 73, 59, 69, and 75 Answer parts (a) - (d) a) What grade must she receive on her last exam to pass the course? Sheryl must receive a score of or more on the last exam to pass the course. (Type a whole number.) b) An average of 70 is needed to get a C in the course. Is it possible for Sheryl to get a C? If so, what grade must she receive on the seventh exam? Assume that the exams do not have any ex credit questions. Sheryl would need a score of to get a C. Since it [ possible to get a score of (Type whole numbers.) possible to eam a C. c) If her lowest grade of the exams already taken is to be dropped, what grade must she receive on her last exam to pass the course? If Sheryl's lowest grade of the exams already taken is to be dropped, she must receive a score of or greater on her last exam to pass the course. (Type a whole number.) d) If her lowest grade of the exams already taken is to be dropped, what grade must she receive on If Sheryl's lowest grade of the exams already taken is to be dropped, she must receive a score of (Type a whole number.) her last exam to get a C in the course? or greater on her last exam to get a C in the course.