The photography club takes 559 pictures in a
week. they use memory cards that hold 85 pictures
each. how many memory cards will the
photography club use in a week?

Solve the equation x/4 - 5= -8 -27 -12 -7 12

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

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