Simplify the rational expression 6x(x+3)(x-2)/3(x-2)(x+9) a) 2x/x-3 b)2x/(x-9) c) 2x(x+3)/(x+9)

What is the rescursive formula for this geometric sequence? 7, -14, 28, -56

Find the value of x for which line a is parallel to line b

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