Answer:
3.81 centimeters per month
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:
[tex]1.5\text{ in per month }\times\frac{2.54\text{ cm}}{1\text{ in}}=3.81\text{ cm per month}[/tex]So, the plant root grows 3.81 centimeters per month