To achieve a surplus or deficit of $0 in Month 3, the miscellaneous expenses would need to be increased by $431 .
A balanced budget with zero surplus or deficit in Month 3 can be reached if the miscellaneous expenses is raised by $431, which is the current surplus. This adjustment would make the new total for miscellaneous expenses $1,295.
With this change, the overall variable expenses for Month 3 would amount to $2,895, and the total expenses would still stand at $4,360. As a result, the surplus or deficit for Month 3 would be exactly $0, effectively aligning the budget for that specific month.