Final answer:
The rate can be written as 1/3 in simplest form.
Step-by-step explanation:
To write the rate as a fraction in simplest form, we can set up a ratio of the number of shrubs to the distance in feet. In this case, we have 14 shrubs for every 42 feet.
So the rate can be written as 14/42.
To simplify this fraction, we can divide both the numerator and denominator by their greatest common factor, which is 14.
Dividing 14 by 14 gives 1, and dividing 42 by 14 gives 3.
Therefore, the rate can be written as 1/3 in simplest form.