The product of three-fourths and a number is 18. What is the number? O 13 1/2
0 17 1/4
O 18 3/4
O 24

If 25% of y is 30, what is 60% of y?

Ineed to know the answer to this algebra question.

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