I will mark Brainliest for first and correct answer. PLEASE NO LINKS Mark checks the cost of pens at several stores to determine the best deal. Which choice gives the lowest cost per pen?
a) $7 for a pack of 5 pens
b) $15 for a pack of 10 pens
c) $18 for a pack of 15 pens
d) $48 for a pack of 30 pens

Please also explain how you got the answer even better the working

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

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.

Classify the following number. −9.070707…