There are 512 players in a tennis tournament. In each round, half of the players are eliminated. Which function can be used to find the number of players remaining in the tournament at the end of `x` rounds?
The function that can be used to find the number of players remaining in the tournament at the end of `x` rounds is:
\[ f(x) = 512 \times \left(\frac{1}{2}\right)^x \]
where:
- \( f(x) \) is the number of players remaining after `x` rounds
- 512 is the initial number of players in the tournament
- \(\left(\frac{1}{2}\right)^x\) represents the halving of the players in each round for `x` rounds.