Final answer:
The net income can be calculated by subtracting the expenses from the revenue.
Step-by-step explanation:
The net income can be calculated by subtracting the expenses from the revenue. In this case, the revenue consists of the cash received from common stock issuance ($6,000) and the cash received from a plumbing repair project ($3,000). The expenses include the cost of equipment ($4,000), rent ($900), and plumbing supplies ($200). Since plumbing supplies of $200 are left, they are not included as an expense.
So, the calculation would be:
Net Income = (Revenues - Expenses)
Net Income = ($6,000 + $3,000) - ($4,000 + $900)
Net Income = $9,000 - $4,900
Net Income = $4,100
Therefore, the correct answer is D. $700.