Which values are solutions to 90 < –30p + 15?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Solve the system of equations y= 3/2 - 1, -x+ y =-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