Final answer:
The expression that represents the perimeter of the garden in simplest form is 14x.
Step-by-step explanation:
To find the perimeter of the garden, we need to add up the lengths of all four sides. The length of the garden is represented by 5x-1, and the width is represented by 2x. So, the perimeter can be written as (5x-1) + 2x + (5x-1) + 2x.
To simplify this expression, we can combine like terms. 5x + 2x + 5x + 2x = 14x.
Therefore, the expression that represents the perimeter of the garden in simplest form is 14x.