Free points again

:) hehe smile

Acircle has a circumference of 28.36 units what is the diameter of the circle

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%)

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose