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3(10x-y)-5(x-y^2) need this solved asap

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

What is the x-intercept and y-intercept of the equation 2x+1. 2o