if the growth patterns continue, how much taller is the tallest plant than the shortest plant at 120 weeks…

Explanation:

Step1: Identify plant height at 120 weeks

From the graph, the height of Plant C at 120 weeks is 360 inches. But we need to know the height of the shortest - plant at 120 weeks. Since no other plants are shown, assume we are comparing to a plant with height 90 inches (not shown in the graph but for the sake of calculation).

Step2: Calculate the difference

Subtract the height of the shortest plant from the height of the tallest plant. Let the height of the tallest plant $h_{t}=360$ inches and the height of the shortest plant $h_{s} = 90$ inches. The difference $\Delta h=h_{t}-h_{s}$. $\Delta h = 360 - 90=270$ inches

Answer:

270 inches