Simplify the expression. -3(1+n)-6n

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

Which is the focus of a parabola with equation y2=4x