Solve by elimination
5x+y=3
7x-3y=-31

Aline that intersects one of two parallel lines intersects the other also always sometimes never

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?