A wrestling competition has eliminations each round. The table below shows the number of players in each of the first 5 rounds of the tournament: Round (x) 1 2 3 4 5

Players f(x) 64 32 16 8 4

Compute the average rate of change of f(x) from x = 1 to x = 5 and identify the meaning of that rate.

-15; on average there were 15 fewer wrestlers each round.
60; there were 60 fewer wrestlers between rounds 1 and 5.
-60; on average there were 60 fewer wrestlers each round.
4; there were 4 rounds between rounds 1 and 5.