Problem #1: Justin started a lawn maintenance business. His rate to maintain an average size lawn is $30. It cost Justin $750 to start the business (trailer, equipment, etc.) and he estimates that his cost per lawn is $1.50 (gas, oil, blades, etc.). a) Write the cost function in terms of c(x), the revenue function in terms of r(x), and the profit function in terms p(x) in simplest form of for Justin’s business.
b) Set up an equation use algebra to find the number of lawns that Justin has to maintain for his business to break-even.
c) Find and interpret the meaning of p(100).
d) Set up an equation and use algebra to find when Justin’s business will make a profit of $25,000?
e) Sketch the cost and revenue functions on the same graph.

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.