Find the focus and directriz of the parabola with the equation y^2=14x

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14