Which series of transformations can be used to prove that triangle ABC is congruent to triangle A'B'C'?

What is the inverse of the function f(x) = 2x + 1?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

We have enough material to build a fence around a station that has a perimeter of 180 feet the width of the rectangular space must be 3 1/4 feet what must the length be