The scatter plot shows the estimated value, in dollars, of an antique over a period of 50 years. During which of the following 20-year intervals was the average rate of change in the antique's value the greatest?
Data Points for Scatter Plot:
(0, 1000)
(10, 1500)
(20, 2200)
(30, 2000)
(40, 1800)
(50, 1650)
Between 0 and 20 years
Between 10 and 30 years
Between 20 and 40 years
Between 30 and 50 years
