Final answer:
Lando's net monthly income as a smuggler is $12,000.
Step-by-step explanation:
To calculate Lando's net monthly income as a smuggler, we need to subtract his monthly expenses from his total revenue. Lando's monthly expenses are as follows:
- Labor cost: $6000
- Equipment cost: $4000
- Operating cost: $5000
- Maintenance cost: $3000
Adding up all the expenses gives us a total of $18,000 per month. To calculate Lando's net monthly income, we subtract the total expenses from the total revenue: $30,000 - $18,000 = $12,000. Therefore, Lando's net monthly income as a smuggler is $12,000. The correct answer is option 3).