Hi can yall help me please asap PLEASE DONT JUST GIVE ME THE ANSWERS WORKING TOO PLEASE hope you are having a great day thank you:)​

For what value of (y) is 3^3/3^y =1/9

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio