Joanne is building a 1: 200 scale model of the Great Pyramid of Giza for a Social Studies Project. Her model has a square base that is approximately 3.8 feet on each side. What is the (approximate) area of the base of the actual Great Pyramid of Giza in square feet?

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