With my sisters homework ! if you can give a simple explanation she is confused! !

1. are the triangles similar and if so why? what is the value of x? show your work.

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

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.