Question

Zohar is using scissors to cut a rectangle with a length of 5x - 2 and a width of 3x + 1 out of a larger piece of paper. Which

expression can be used to find the perimeter of the rectangle and what is the perimeter if x = 4?
(5x-2)+(3x+1), 31 centimeters
(5x-2)+(3x+1), 36 centimeters
2(5x-2)+2(3x+1), 62 centimeters
O2(5x-2)+2(3x+1), 70 centimeters​

Answer 1

2(5x-2)+2(3x+1)

Explanation:

perimeter of rectangle = 2l + 2w

perimeter = 2(5x-2)+2(3x+1)

= 10x - 4 + 6x - 2

= 16x - 2

when x=4, 16(4)-2

= 62cm

(Correct me if i am wrong)

Answer 2

2*(5x - 2) + 2*(3x+1) ; Perimeter = 62 centimeters

Explanation:

2*(5x - 2) + 2*(3x+1) = 10x - 4 + 6x + 2

= 16x -2

If x = 4 , then Perimeter = 16*4 - 2 = 64 - 2 = 62 cm