(1/2)x x 3/43=

Pls im so close for finishing 20 POINTS

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which expression is equivalent to 3^3 + 2^2?