Can someone explain this to me im kinda confused and need help so does anyone understand what this is saying. The area of a rectangular garden is given by the trinomial x2 + 2x – 48. What are the possible dimensions of the rectangle? Use factoring.

x + 4

x - 2

x + 8

x + 6

x - 4

x - 6

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%