Plz help me find this answer for number 9 and number 10 offering 20 points for a answer !!

For the equations below which statement is true ? -2x=14 6x=-42

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%

Which table represents points on the graph of h(x) = 3√-x+2?