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For the year ending June 30, 2021, Island Clinical Services mistakenly omitted adjusting entries for $1,800 of supplies that were used, (2) unearned revenue of $5,600 that was earned, and (3) insurance of $4,250 that expired. What is the combined effect of these errors on (a) revenues, (b) expenses, and (c) net income for the year ended June 30, 2021?