Where should Jackson insert parentheses to make the equation true? 6°2 + 5 - 5 = 12 • =

A50% increase followed by 33 1/2% decrease

Complete the steps to find 4.830 ÷ 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%)