19. Write an expression that represents the
perimeter of the figure below

P = 8n +12

Step-by-step explanation:

The lines on the sides are saying all 4 sides are equal

The perimeter is the sum of all 4 sides,but since they are the same

P = 4s where s is the side length of one of the sides

P = 4( 2n+3)

Distribute

P = 8n +12

2 is the final ! : )

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.