Oh my gosh
i don't have no idea,

and don't forget to show your work.

A=LW
7x^3-42x^2=L(7x^2)
7x^2(x-6)=L(7x^2)
divide both sides by 7x^2
x-6=L
legnth=x-6

13. biased becasue they call documentary boring and action movie exiting, that is subjective, they should say, documentary or action movie, and not dexscribe it

14. survey in health club
helathy peopel probably don't drink alot of differnt beverages (maybe only sports drinks or water)
biases

12. L=x-6
13. biased
14. biases

First you have to minus the shipping fee from the total cost which leaves 92.6. Then divide that by 4 which is how many books she bought. 92.6 divided by 4 is 23.15. So she spent $23.15 for each book