Find the x-intercepts for the parabola defined by this equation:
y = 3x2 + 3x - 6
Write your answer as two ordered pairs:
(x1, yı), (x2,42)
Separate the values with a comma. Round, if
necessary, to the nearest hundredth.

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%