A botanist uses the representations below to show the heights in inches, h, of different plants over a period of time, t. If the growth patterns continue, how much taller is the tallest plant than the shortest plant at 120 weeks of growth?

At 120 weeks, ...
• the table tells you plant A is 180 inches tall
• the function tells you plant B is 4·120/3 = 160 inches tall
• the graph tells you plant C is 360 inches tall.

The tallest plant is 360 inches tall; the shortest is 160 inches tall. Their difference in height is
... 360 in - 160 in = 200 inches

The slope of the function is 0.5.