3. lighting you are installing solar lighting units
along the driveway to your house. each unit is on
sale for $5. you purchase 18 units. show how you
can use the distributive property to find the total
cost of the lighting units mentally.

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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