Answer questions $7,8,$ and $9$ using the following problem

Johnson, Inc. is considering a new project. The project will require $$325,000$ for new fixed assets, $$25,000$ for delivery and installation and $$75,000$ for additional inventory. The project has a $7-$year life. The fixed assets will be depreciated straightline

to a zero$-$book value over the life of the project. At the end of the project, the fixed assets can be sold for $$105,000.$ The net working capital returns to its original level at the end of the project. The project is expected to generate annual sales of $$600,000$ and costs of $$400,000.$ The tax rate is $21$ percent and the required rate of return is $12$ percent.

What is the project's cash flow at time zero $($Initial Investment$)?$