How many solutions does the nonlinear system of equations graphed below have?
A. One
B. Four
C. Two
D. Zero

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%

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25