Effect of omitting adjustments

For the year ending June $30,$ O'Keefe Medical Services Co$.$ mistakenly omitted adjusting entries for $(1)$ $$6,900$ of supplies that were used, $(2)$ unearned revenue of $$11,300$ that was eamed, and $(3)$ insurance of $$3,800$ that expired. Indicate the combined effect of the errors on $($a$)$ revenues, $($b$)$ expenses, and $($c$)$ net income for the year ended June $30.$

$($a$)$ Revenues

$($b$)$ Expenses

$($c$)$ Net income