Final answer:
To determine if Barbara will need more than one quart of paint, we need to calculate the area of the front of her dog's house and divide it by 8. If the result is greater than 1, then she will need more than one quart of paint.
Step-by-step explanation:
To determine if Barbara will need more than one quart of paint, we need to calculate the area of her dog's house. Since she is only painting the front, we only need to consider the area of the front of the house. Let's say the front of the house is a rectangle with a length of L and height of H. The area of a rectangle is given by the formula A = L x H. Once we have the area of the front of the house, we can divide it by 8 to find the number of quarts of paint needed. If the result is greater than 1, then Barbara will need more than one quart of paint.