Astore is having a sale where all jeans are 1/4 off the regular price. find the constant of proportionality, then write an equation relating to the sale price to the regular price.

Simplify the expression 10/11(22z) + (a+5) -1

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

Prove that 16^4-2^13-4^5 is divisible by 11.