Please help will mark brainliest

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b