To find the mean, add up all the numbers in the data set. After, divide by how many numbers are in the data set. Try it out with your data. If you need help with the actual answer, feel free to write in the comment box.
Hope this helps.
This would be 3^5 (three to the fifth power). Which is 243. So the answer is 243.
Answer:
When 68.321 rounded to the nearest tenth the result is 68
in factor form (2x+1)(4x^2-2x+1)