Given f(x)=3x2+4x and g(x)=2x2−x+1.

What is (f+g)(x)?

5x2+3x+1

−x2−5x−1

​6x2−4x+1​

​x2+5x−1

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