Answer:
64
![in^(3)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/guywg5a7gmh3hbg5wbbnvkum9pcyxmmtmu.png)
Explanation:
The volume of a cubic box with side length of s inches can be calculated using the following formula
![V = s^(3) in^(3)](https://img.qammunity.org/2021/formulas/mathematics/high-school/btewmi3f0pgxih1aa2i6qmikkje458y763.png)
If the initial side length was 3 inches and the customer asked Simon to increase each one of the sides of the box by one inch, then the new side lengths now become 4 in (3+1 = 4)
![V = 4^(3) in^(3) = 64 in^(3)](https://img.qammunity.org/2021/formulas/mathematics/high-school/w35712387oxb558pisqu9439l2fkoabwr6.png)
Therefore the final and new volume is
64
![in^(3)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/guywg5a7gmh3hbg5wbbnvkum9pcyxmmtmu.png)