For each system, find the equilibrium points. Are the equilibrium points isolated or non-isolated? Are there any periodic orbits?

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%

Write as a product of two polynomials. 2(3–b)+5(b–3)^2

The graph shows the amount of total rainfall at each hour what was the total rainfall amount after three hours