Which of the following is the correct slope-intercept form of the equation -4x+2y=14

y=-2x+7

y= -4x+14

y=4x+14

y=2x+7

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%)