Final answer:
The initial height of Tuyen's lemongrass plant is 35 inches. After cutting the stalks, the height changes to 20 inches. The change in height after the plant's growth cannot be determined.
Step-by-step explanation:
The question asks about the change in height of Tuyen's lemongrass plant after its growth following the initial cut. We know that initially, the plant's height is 35 inches. Then, Tuyen cuts the stalks, resulting in a height change of -15 inches. So, the new height is 35 - 15 = 20 inches. As for the change in height after the plant's growth, the question does not provide any information or measurements, so we cannot determine the exact change. Therefore, the answer is indeterminate.