Free points have a great day ^w^

Classify each polynomial by its degree and by its number of terms.

Find the roots of the equation below. x^2 - 6 + 9 = 0

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%