Put these scenarios into a Category: Linear, Exponential, Or Neither

1- If the half-life of a substance is 2 days, what is the amount of the substance left at the end of 4 days?

2- The altitude of a hot air balloon and time when the hot air balloon takes off at 7500 feet above sea level and rises 180 feet every minute.

3-The cost of the rental space is $780 and the price per person for food is $9.75

4-The distance driven and total cost when a taxi driver charges $3 for the first mile and $2 for each additional mile.

5-The number of bacteria and time when a culture of 5000 bacteria is reduced by 50% every two hours.

6-The volume of a landfill and time given that the volume triples every five years.

Use circumcenter theorem to solve for the given values

What percent of 18 is 24? and plz explain thx.

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.