Add 1/3n + 2/3 and -1/6n + 1/6m

Someone explain what to do..

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Louis wants to carpet the rectangular floor of his basement. the basement has an area of 864 square feet. the width of the basement is 2/3 it's length. what is the length of louis's basement

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)