Use the given information to determine which of the following relationships can be proved and why?

What are the domain and range of the function? f(x) = -4 (sqrt)x

In what form is the following linear equation written y=9x+2

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%