17) Part A: A store orders flour that comes in 10 pound bags and 20 pound 5 points bags. The number of 20 pound bags is 20 more than twice the number of
10 pound bags. Which expression represents the number of 20 pound
bags?
A : 2x+20
B : x+2
C : x+20
D : 2 (x+20)

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%)