a number when on the to the nearest 10 is equal to 50 the same number one on the to the nearest hundred is 100​

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

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.