Answer:
3.81 centimeters per month
Step-by-step explanation:
We know that 1 inch is equal to 2.54 centimeters, so to convert 1.5 inches per month to centimeters per month we will use the proportion 2.54 cm / 1 in.
Therefore, 1.5 inches per month is equal to:
![1.5\text{ in per month }*\frac{2.54\text{ cm}}{1\text{ in}}=3.81\text{ cm per month}](https://img.qammunity.org/2023/formulas/mathematics/college/xknfubfsswl94b5055zdz8o6h7syfbrc21.png)
So, the plant root grows 3.81 centimeters per month