In a given course a student receives preliminary examination grades of 81, 85, and 95. the final examination is weighed for one-
third and the average of the preliminary grades is weighed as 2/3 of the final grade. what should the final examination grade be for a semester average of 90?
David walks 10 dogs, because if he earns a dollar for each dog he walked that means he walked 10 to earn 10 dollars. I’m not good with sentences so I’m sorry if you do not understand.