Where to Dig: The dinosaur's neck bones are at another point on the grid — the solution to the system of equations below. Find the fossil! x + y = 5 –3x + 2y = 5

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%)