Answer the following based on these facts... Burt decides to opens a spin studio. He signs a five year lease for $10,000 per month. He purchases 50 indoor bikes for $50,000. He initially charges students a flat price of $35 per class. Burt pays his instructors exclusively based on attendance at a rate of $10 per student per class. Burt does all other work and does not pay himself. 35. What is his per student per class contribution? 36. What is his contribution margin? Your answer should be expressed as a percentage. 37. How many classes must Burt sell in order to be cash flow positive each month? 38. Over his first five years, how many classes must Burt sell in order to cover all his fixed costs? 39. After a few months, Burt determines he cannot sell enough classes at $35 price to cover his monthly rent so he decides to offer a $25 class at 10am and $30 class at 8pm. With these reduced price classes, his average contribution margin becomes 60%. How much revenue must the spin studio generate in order to break even on a monthly cash flow basis? 40. With these additional classes, Burt cannot handle all front desk and cleaning duties on his own so he hires an assistant, which allows him to keep the studio open for additional hours. Is this cost variable or fixed or mixed? Circle One! Explain in less than 10 words