The expenses and income of an individual are given in table form to the

right. Find the net monthly cash flow $($it could be positive or negative$).$

Assume salaries and wages are after taxes. When you need to convert

between weeks and months, assume that $1$ month $=4$ weeks.

Part$-$time job: $$\frac{400}{?}$ month

College fund from grandparents: $$\frac{400}{?}$ month

Scholarship: $$\frac{4200}{?}$ year

Expenses

Rent: $$400/$month

Groceries: $$\frac{50}{?}$ week

Tuition and fees: $$3000$ twice a year

Incidentals: $$120/$week

The net monthly cash flow is $

$($Round to the nearest dollar as needed.$)$