Can someone help me please??

Which representation has a constant of variation of -2.5

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

Landon wrote that 3−2.6=4. which statement about his answer is true?