Answer:69.15
Step-by-step explanation: the deviation is 6 which and 1/6 of people got the same grade as him - 100 = 69.15
Answer:
8a) 3x
8b) 3 × x
8c) (2/3)x
8d) x/2
8e) 1/x
9a) 4x - 7
9b) x + 1/x
9c) 5(x + 2)
9d) x/(x + 4)
9e) (x/8) + x