Open Question: Marketing math questions?

Price of unit: $1 Retail margin is 30% Rent is $36000 for the year Equipment/office furniture $150,000 (bought in year 1) Packaging cost is $0.15 per unit Shipping cost: 1 box(24 units) is $3.50 3 employees earn $55,000 each - in year 1 the company has a promotion: first 50,000 customers to buy 2 units get 1 free(using coupons) Unit Sales= year 1: 500,000, year 2: 880,000, year 3: 1,300,000 -rent, unit price, shipping cost increase 5% each year -All personal costs increase by 3% each year what is: a) whole sale revenue for each year b) fixed expense each year c) variable expense each year d) Profit/Loss each year e) Total CM each year f) CM per unit each year g) Break-even in unit each year h) break-even in dollars each year i) Pay back for initial investment Thank you so much for all your help, I Appreciate it. I'll give you the most points I can.