The midpoint of \overline{\text{AB}} AB is M(-3, 2)M(−3,2). If the coordinates of AA are (-7, 1)(−7,1), what are the coordinates of BB?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)