The NCAA basketball tournament begins with 64 teams, and after each round, half the teams are eliminated. The number of remaining teams t(n) is an exponential function of the number n of rounds already played. 1) t(n)=64(n)^1/
2) t(n)=64(2)^2
3) t(n)=64 (1/2)^2
4) t(n)=64 (2)^1/2
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