Explanation:
The test grade for 1st three tests = 62, 85, 89
Let the fourth test score = x
The result we hoping to get is grade B.
Let's find the average of the four test score




This means Cassie needs to score 84 or more to get a grade of B
In ineq
Well, if 6/7 is 18, and how many is the 7/7 or a 1 whole(total)?
82% as a fraction would be 82 over 100 when you simplify that you get 41 over 50. The missing percent is 18 because 18%+82%=100%. Next you would need to write 18 over 100 and then simplify that. You write it as 18 over 100 because it is 18 hundredths. If you wrote 18% as a decimal it would be 0.18 which is 18 hundredths which would be 18 over 100
I think it might be commutative or associative but double check