I guess that <em>d</em> is the distance you can see? Since they don't mention it in the question.
30.65 = (5/6)√h ← Divide both sides by 5/6, or multiply by 6/5
(6/5)30.65 = √h
36.78 = √h ← Square both sides to get h
h = 1352.76 or D
The correct anwser is the last for sure
(x+2)(x+1)
If you multiply those together then it will equal x^2+3x+2.
First you have to subtract 3x and then divide everything by -4 to get y=3/4x-7
