For the year ending June 30, Island Clinical Services mistakenly omitted adjusting entries for (1) $1,500 of supplies that were used, (2) unearned revenue of $4,200 that was earned, and (3) insurance of $5,000 that expired. What is the combined effect of these errors on (a) revenues, (b) expenses, and (c) net income for the year ending June 30? Enter all amounts as positive values.