The graph shows the function f(x)=−12x+26 and g(x)=−(15)−x+2+3 .

What are the solutions of the equation −12x+26=−(15)−x+2+3 ?
x = 2 and x=−22

x = 2 and x = 4

x=−22 and x = 3

x = 2 and x = 3

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%