micha is saving money for his first car his parents gave him $250 for his birthday, and each week he plans on putting $40 into his savings account. micha wants to save at least $2500. how many weeks will it take him to save the money? Write an inequality to model the Situation.

On a piece of paper, graph . then determine which answer choice matches the graph you drew

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

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