I don't know what r180° (P) even is

What is the simplified expression for 6(2(y+x))

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat