−5, −6, 0, 6

Which pair of numbers has a sum of zero

What is the slope of the line shown below?

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

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?