Please solve with explanation

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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%

New york is the 27th largest state in the united states.what percent of the 50 states in the us are larger than new york