Write an equation of the parabola in intercept form that passes through (14,4) with x-intercepts of 12 and -6

Which function is represented by the graph

Which function has the same domain as y=2x

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.