Please help me understandAfter$-$Tax Cash Flows

For each of the following independent situations, compute the net after$-$tax cash flow amount by subtracting cash outlays for operating expenses and income taxes

from cash revenue. The cash outlay for income taxes is determined by applying the income tax rate to the cash revenue received less the cash and noncash

$($depreciation$)$ expenses.

Do not use negative signs with any of your answers below.