Sam's grades
type grade
quizzes 73%
tests 87%
homework 92%
final exam 90%

sam's grades are shown in the table. the teacher calculates the overall grade as follows: quizzes and tests are each 30% of the overall grade, homework is 15%, and the final exam is 25%. what is sam's overall average?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.