Find the values of x and y that make these triangles congruent by the hl theorem. x=3.y=2 x=2,y=1 x=2,y=3 x=1,y=2

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%)