Which method would be the most efficient method to solve x^{2}-6=0.

a)factoring
b)using the quadratic formula
c)all three methods would be efficient
d)isolating the x^2 term and finding the square roots of both sides.

How do i work this problem out using the equation a=pe^rt

Which of the following is the graph of y= square root -x-3

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables