Pls help, it is due soon, greatly appreciated if you help :)

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?