Answer:
![2x(x + 3) = 8](https://img.qammunity.org/2021/formulas/sat/middle-school/lfn5y8frxd2s4tylzhuzemxtb1zkg6ibdl.png)
Step-by-step explanation:
The volume of a rectangular box is given by;
![V = l * w * h](https://img.qammunity.org/2021/formulas/sat/middle-school/3zgc4i4rdmg6imwarc6jrhhaqeioigq2ui.png)
It was given that, the volume of the box is V=8 cubic inches.
The length of the box is l=2 inches.
Let the width of the box be x inches.
The height of the box is 3 inches more than the width. That is
![h = x + 3](https://img.qammunity.org/2021/formulas/sat/middle-school/fluyr1gkh4xwyzf9wvuy2t6ac4fhgf5uy9.png)
We now substitute all values into the formula to get:
![8 = 2 * x(x + 3)](https://img.qammunity.org/2021/formulas/sat/middle-school/7hbt9dc8d8zsgenvvnat9dtqcu14cum1ky.png)
Therefore the required equation is
![2x(x + 3) = 8](https://img.qammunity.org/2021/formulas/sat/middle-school/lfn5y8frxd2s4tylzhuzemxtb1zkg6ibdl.png)