Which direction do positive angles "track" from the positive x-axis? right , clockwise, counterclockwise, left

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11