Final answer:
To find the width of Kendra's dog's pen with an area of 135 square feet and a length of 15 feet, divide the area by the length, which results in a width of 9 feet.
Step-by-step explanation:
The question asks us to find the width of Kendra's dog's pen if we know that the area of the pen is 135 square feet and the length is 15 feet.
To calculate the width, we use the formula for the area of a rectangle, which is Area = Length × Width. Since we know the area and the length, we can solve for the width.
Area = Length × Width
135 square feet = 15 feet × Width
Width = 135 square feet ÷ 15 feet
Width = 9 feet
Therefore, the width of Kendra's dog's pen is 9 feet.