A sports tournament has 7 elimination rounds to crown a champion. After each round, only half of the teams make it to the next round. The table below shows the number of teams in each round of the tournament. Round x 1 2 3 4 5 6 7
Teams f(x) 64 32 16 8 4 2 1

Compute the average rate of change of f(x) from x = 3 to x = 5, and describe what it represents.

a. Avg. Rate of Change = 6.
This represents the average rate at which teams were added from round 3 to round 5.

b. Avg. Rate of Change = 6.
This represents the average rate at which teams were eliminated from round 3 to round 5.

Selected:c. Avg. Rate of Change = - 6.
This represents the average rate at which teams were eliminated from round 3 to round 5.

This answer is correct.
d. Avg. Rate of Change = - 6.
This represents the average rate at which teams were added from round 3 to round 5.