The temperature at 6:00 P. M. was 25°C. The temperature dropped 3°C per hour. What was the temperature at 4:00 A. M.? A.23 Degrees B.-5 Degrees
C.-23 Degrees
D.5 Degrees

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%)