The length of a rectangle is 2 more than 3 times its width. if the perimeter is 68, find the length and width.

The length is 26 and the width 8.

Step-by-step explanation:

First you have to consider that the perimeter of a rectangle = 2·length + 2width. If length = 3width + 2, you can call "x" to the width. Then

x = width ⇒ length = 3x + 2.

Perimeter = 2·(3x + 2) + 2·x ⇒ Perimeter = 6x + 4 + 2x ⇒

Perimeter =  8x + 4 ⇒ 68 = 8x + 4 ⇒ 68 - 4 = 8x ⇒ 64 = 8x ⇒ 64/8 = x

⇒ x = 8.

Finally, width = 8 and length = 3x + 2 ⇒ length = 26

14

step-by-step explanation:

14 x 3 = 42

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.