Apolynomial to the 5th degree with a leading coefficent of 7 and a constant term of 6

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Which of the following will form the composite function?