Katie earns $1000 by mowing lawns during the summer. write an equation that relates the amount c katie charges per lawn and the number of lawns she needs to mow to reach $1000.

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%

Can some one me with these questions

The product of sin 30 degrees and sin 60 degrees is same as the product of