Much appreciated!
find the area of each shaded region. assume that all angles that appear to be right angles are right angles.

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of complete rectangle minus the area of the smaller inside rectangle

so

Alternative Method

The area of the shaded region is equal to the area of three rectangles

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.