Complete the tables of values. ox
4-2
--1
3
2
3
-1
4
0
a
O
d
2.
b
2
e
4
4
f
a =
b =
d =
e-
e =
f =
DONE

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%)