Question

according to figure 1, what was the average height of the french bean plants that were planted in the potting soil 30 days after being planted?

Explanation:

Step1: Identify the line for potting soil

We look at the graph and find the line representing potting soil (the one labeled "Potting Soil").

Step2: Find the 30 - day mark on the x - axis

Locate the point on the x - axis (Days Since First Planted) that corresponds to 30 days.

Step3: Find the corresponding y - value (height)

From the 30 - day mark on the x - axis, move up to the potting soil line, and then left to the y - axis (Average Height (cm)). We can see that the value is around 15 cm.

Answer:

15 cm (corresponding to the option "15 cm")