Mackaya took 120 pictures at his party. 15of the pictures were good and the rest were damaged. How many pictures were damaged?

What is the common difference in the following arithmetic sequence? 7,3,-1,-5

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

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