Final answer:
The total revenue to be reported on the income statement for the month of January is $12,500.
Step-by-step explanation:
The amount of total revenue to be reported on the income statement for the month of January can be calculated by adding up all the cash and accounts receivable received from consulting services performed during January. In this case, the consulting firm received $4,500 in cash and provided consulting services on account for $8,000. Therefore, the total revenue for the month of January would be $4,500 (cash received) + $8,000 (accounts receivable) = $12,500.