I got a. I multiplied 0.125 by 45 and got 5.625. I then divided 5.625 by five an got 1.125. I'm not really sure about my answer, so I did it another way. I divided .125 by five and got .025 so I multiplied that by 45 and got 1.125. I multiplied 1.125 by 1000 and got A.
idk what kind of math problem but, if its just simple id us PEMDAS
y+2 = 3x
subtract 2 from each side
y = 3x-2