Can someone please help me with this
I've asked a few questions but nobody has answered them yet

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4? r^2. write your answer in scientific notation.