uma wanted to have a test average of 85%. On her first 7 tests she averaged 83% on her tests. what does she need to get on her 8th test to have an overall average of 85%

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.

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%)