8 ^ x * 16 ^ x - 1 equals 1​

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?