6. The quadratic functions f(x)=-x² + 2x+6 and g(x)=x² + 2x are shown graphed below. The positive solution to f(x) = g(x) is closest to which of the following?
(1) x = 6.5
(3) x=1.7
(2) x = 3.7
(4) x=0.5

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

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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