The work of a student to solve the equation 4(2x − 4) = 8 + 2x + 8 is shown below:

step 1: 4(2x − 4) = 8 + 2x + 8
step 2: 6x − 8 = 16 + 2x
step 3: 6x − 2x = 16 + 8
step 4: 4x = 24
step 5: x = 6

in which step did the student first make an error and what is the correct step?

Which representation has a constant of variation of -2.5

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

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.