What is 1/4 (fraction) of 32

What is negative 3/9 times negative 2/8 ?

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%)

What expression is equivalent to (84+16)