8. Country Carpets charges $22 per square yard for carpeting, and an
additional installation fee of $100. City Carpets charges $25 per square
yard for the same carpeting, and an additional installation fee of $70.
a. Write and solve an equation to find the number of square yards of
carpeting for which the total cost charged by the two companies
will be the same.

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x