Aubree worked as a substitute teacher last month. She substituted a total of 18 days. The first
part of the month she worked in Tucson, Arizona, where she was paid $75 a day. Then she
moved to Oregon, where she was paid $135 a day to substitute. During the month she earned
$2010. How many days did she substitute in each state?

Which statements about these triangles is true

Bring the fraction a/a-4 to a denominator of 16-a^2

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