What are the zeros of the function defined by the expression - x^2 - 9x - 8? A
x = -1; x = -8
B
x= -1, x = 8
С
x = 1, x = -8
D
x = 1, x = 8

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%

What is the slope of the line shown below?

Factor the polynomial. b^2 + 4b + 4