When rounding to the nearest 10 cents, an amount will round to $14.80 if it is between $14.75 and $14.84. This means:
- The minimum amount that rounds to $14.80 is $14.75.
- The maximum amount that rounds to $14.80 is just below $14.85, which would be $14.84.
Therefore, the exact amount William paid can be any value in the range:
$14.75 ≤ Exact Amount < $14.85.
Examples of valid exact amounts could include $14.76, $14.78, or $14.83, among others within that range.