Rich added 26.2 milliliters of water
to a solution in science class. the
directions said to add 22.6 milliliters
of water. what was the percent error
(to the nearest hundredth percent) in
the amount of water rich added?
a 13.74%
b 15.93%
c 16.79%
d 19.47%

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%)