It’s math, and I’m not good at it

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?