Questions 22-25, no working out needed

What is the reflection image of (5,-3) across the line y = -x?

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2