It's 96%
816/850 = 0.96, which is 96%
Hope I helped! ( Smiles )
Use the law of sines; see the attached picture.
Average = Mean
Mean → Add all the numbers and divide by how many there are
3 + 9 + 14 + 5 + 8 + 12 + 7 = 58
There are 7 numbers.
58 ÷ 7 = 8.3
Answer = 8.3
Hope this helped :)