Angela’s average for six math tests is 87. On her first four tests she had scores of 93, 87, 82, and 86. On her last test, she scored 4 points lower than she did on her fifth test. What scores did Angela receive on her fifth and sixth tests? fifth test = 85; sixth test = 81 fifth test = 85; sixth test = 89 fifth test = 90; sixth test = 86 fifth test = 89; sixth test = 85
87=(T1+T2+T3+T4+T+T6)/6
87=(93+87+82+86+x+(x-4))/6
876=93+87+82+86+2x-4
876=344+2x
178=2x
89=x implies 85, 89