Which measurement could be a surface area measure?

24 km2
18 m3
63 oz.
12 mm

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Triangle xyz has vertices x(1,3), y(0,0)

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap