Which explanation correctly solves this problem?
reggie was fixing his fence. at the end of the day, he had 13.5 feet of fence left over. during the day, he had used one 2.5-foot-long piece of fence, two 6.75-foot-long pieces, and one 12-foot-long piece.
how many feet of fence did reggie have at the beginning of the day?
a.
start with 13.5. add 2.5 to it. add 6.75 to the sum. then add 12 to the answer.
b.
start with 13.5. add 2.5 and 6.75 and 12. add this sum to 13.5.
c.
start with 13.5. add 2.5 to it. multiply 6.75 by 2 and add the sum and the product together. then add 12 to the answer.

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.