The table of values represents a polynomial function f(x).
How much greater is the average rate of change over the interval [7, 9] than the interval [4, 6]?
Avg rate of change 7 to 9 = (5760 - 1920 ) / ( 9 - 7 ) = 1920
Avg rate of change from (945 - 105 ) / ( 6 - 4) = 420
1920 / 420 ≈ 4.57 times as great
+595 
