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Assume that a club charges a membership fee of $50 per month for unlimited use of the exercise equipment plus an additional fee of $5 for every instructor-led exercise class you attend. What is your expected cost for a month in which you attend TEN instructor-led classes? A Question 16 (1 point) The contribution margin is Sales revenue minus operating expenses Sales revenue minus variable expenses Sales revenue minus fixed expenses O Sales revenue minus cost of goods sold Question 17 (1 point) The contribution margin ratio is Contribution margin divided by variable expenses Fixed expenses divided by variable expenses