72 80 65 78 60 X 72+ 80 + (5 7 78 7 60 # = 76 . 6 3 55 3 2 2+ 8 0+65 + 78 +6 07 7 = 41/56 72 x/59 3 5 5 +x =. 76 - 80 101 35s fx = . 252 Final class average Before the final exam, a student has test scores of 72, 80. 65. 78. and 60. If the final exam counts as one-third of the final grade, what score must the student re- ceive in order to have a final average of 76