The population P (in thousands) of Belgium from 1992 to 2000 is shown in the table. (Midyear estimates are given.)

(a) Find the average rate of growth
(i) From 1992 to 1996
(ii) From 1994 to 1996
(iii) From 1996 to 1998
In each case, include the units.
(b) Estimate the instantaneous rate of growth in 1996 by taking the average of two average rates of change. What are its units?
(c) Estimate the instantaneous rate of growth in 1996 by measuring the slope of a tangent.

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1992 1996 2000 1998 10,175 Year 1994 10,036 10,109 10,186 10,152