To find the correct inequality, let's break down the problem:
- Price per candy bar: $2
- Total cost of purchasing 725 bars: $400
- Total revenue from selling \( b \) bars: \( 2b \)
- Profit: Total Revenue - Total Cost = \( 2b - 400 \)
- The club needs to make at least $1,000 to go on their trip, which creates the following equation:
\[ 2b - 400 \geq 1000 \]
Now we can simplify this inequality:
\[ 2b \geq 1400 \] \[ b \geq 700 \]
The club has 725 bars, and since \( 725 \geq 700 \), they have enough bars to make the required profit.
Thus, the correct option is:
\( 2b - 400 \geq 1000 \), and yes, it is a viable option.