Hello, I am trying to get my math grade up!

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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 its length what is the length of lewis's basement

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)