Chandra bowled five games. Her scores were 89, 97, 112, 104, and 113. What is her mean score for the five games?

How do i put 3(x+7) in distributive property

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

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