Hint: angle y is adjacent to an angle of 90 degrees adjacent angles add up to 180 degrees
A-c=b i think. hope this helped
Choice A is one of the answers. Nice work. This is because x+x+x turns into 3x.
Choice D is the other answer because 2(x+1) + x = 2x+2+x = 3x+2. You can find this through trial and error. Or you could graph y = x+x+x+2 and y = 2(x+1)+2 to find that they are the same exact identical diagonal line. A non-graph approach would be to set up a table of values to see that the two tables are identical.
Answer:
actually what is this is you is this a geometry, trigonometry I don't know what to call