Which number line shows the solution to -4 minus (-1)

Geometry paper. i don't know how to do the rest. questions 5. 8. 9. and 10.

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

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%