What is the slope of a line parallel to a line whose equation is 4y-6y=15

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

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.