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Math·Advanced Math·Nonlinear functions

easy

There are 176 teams participating in a basketball tournament. Each team participating in the tournament will play against another team in round 1. At the end of each round, the losing team of each game from that round is eliminated and the winning team advances to the next round to play a game against another winning team. Which equation gives the number of teams, $t$, eliminated at the end of round $r$, where $r\le 4$?

A

$t=11{\left(\frac{1}{2}\right)}^r$

B

$t=11(2{)}^r$

C

$t=176{\left(\frac{1}{2}\right)}^r$

D

$t=176(2{)}^r$