help with my homeworm question - don't get it please

Barton Sales Corp is analyzing its sales and profitability performance for thelast quarter of its fiscal year:

Month:OctNovDecTotals

Sales inunits5,0004,5005250

SalesRevenue$ 700,000$630,000$735,000$

Cost of Goods Sold370,000342,000379,000

Gross Margin $330,000$288,000$356,000$

OperatingExpenses:

Shipping$61,500$56,000$65,000$

Advertising70,00070,00070,000

Salaries/Commissions

160,800143,000161,500

Insurance9,0009,0009,000

Amortization42,00042,00042,000

Total Operating

Expenses$343,000$320,000$ 347,500

Net Income/(Loss)$(13,300)$(32,000)$8,500

Required:

1.Complete the totals column

2.Identify the total fixed costs for each month and for the quater

3.Identify the total variable costs - total, and line by line

4.Determine the total number of units sold for the period

5.Determine the variable costs per unit - total, and line by line

6.Use the above information to project the Sales and costs for the first month of the new fiscal year, assuming January sales of 4,100. Explain your reasoning in how you use the above inform-ation to arrive at the projections for January of the next year