Write an algebraic expression for the word phrase: six times a length w

Do you mind if you guys me with this question i’m on number 8

Plzzz answer both questions and i will give you 100 points

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample