What is the perimeter of this rectangle?

The length of the rectangle would be X2 - X1
The height of the rectangle would be Y2-Y1

Perimeter = 2 X length + 2 times height

The perimeter would be 2(X2-X1) + 2(Y2-Y1)

The first choice would be the correct answer.

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.