Answer:
![k+4](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ttrkj7up3dzci8ejsqesva6wuk6dbd03ni.png)
Explanation:
You need to analize the data given in order to solve the exercise.
First, it is important to remember that, in Word problems the word "more" indicates Addition.
In this case, let "k" represents the amount of money (in dollars) that Kiera spends on her backyard.
Accordding to the information provided in the exercise, you know that Lia spends $4 dollars more on her backyard than Kiera spends on her backyard.
Therefore, you can identify that the amount of money that Lia spends can be found by adding the amount of money Kiera spends and $4.
Based on the above, you can determine that this situation can be represented with the following expression:
![k+4](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ttrkj7up3dzci8ejsqesva6wuk6dbd03ni.png)