Find the slope of the line that passes through the points (1, 2) and (2, 5).
a) 6
b) 8/3
c) 3
d) 1/2

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%)