Question

Bonnie earned scores of 90 and 82 on her math tests. what score must she earn on her third test to keep an average of 84 or better?

Answer 1

I would take 84 times 3 for the three tests which gives you 252.  I would then subtract the two test they took which is the 90 and 82 for a total of 172.  252-172 =80.  The lowest score would be an 80