In a sample of 75 randomly selected students at school, 32 are female. there are 1, 371 students in the school. using these results, predict the number of females in the school.
a: 275
b: 343
c: 585
d: 686

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%)