okay so i have a test in 7 days so a nice step by step for these 2 problems would help

Sandy Bank, Inc, makes one model of wooden canoe and the information for it follows: 400 600 750 Number of cances produced and sold Total costs Variable costs Fixed costs Total costs Cost per unit Variable cost per unit Fixed cost per unit Total cost per unit $ 50,000 $ 90,000 $140,000 $ 75,000 $ 90,000 $165,000 $ 93,750 $ 90,000 $183,750 $ 125.00 225.09 $ 350.00 $ 125.00 150.00 $ 275.00 $ 125.00 120.00 $ 245.00 Sandy Bank sells its canoes for $375 each Required: 1. Suppose that Sandy Bank raises its selling price to $500 per canoe Calculate its new break-even point in units and in sales dollars 2. If Sandy Bank sells 670 canoes, compute its margin of safety in dollars and as a percentage of sales. (Use the new sales price of $500) 3. Calculate the number of canoes that Sandy Bank must sell at $500 each to generate $100,000 profit