Is 242 a good score on the map math test?

This question awards 100 ! i really don’t want to fail i will also mark you !

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?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x