The Balance Sheets of Red House Painters Include the Following

The balance sheets of Red House Painters include the following: $$\begin{array} { l r c } &12 / 31 / 18 &12 / 31 / 17\\\text { Interest Receivable } & \$ 0 & \$ 4,300 \\\text { Supplies } & 3,000 & 5,000 \\\text { Salaries and Wages Payable } & 3,800 & 5,600 \\\text { Unearned Service Revenue } & 4,000 & - 0 -\end{array}$$
The income statement for 2018 shows the following: $$\begin{array} { l r } \text { Interest Revenue } & \$ 18,400 \\\text { Service Revenue } & 72,700 \\\text { Supplies Expense } & 8,700 \\\text { Salaries and Wages Expense } & 39,000\end{array}$$
Instructions
Calculate the following for 2018:
1. Cash received for interest.
2. Cash paid for supplies.
3. Cash paid for salaries and wages.
4. Cash received for revenue.