Write the line that is perpendicular to y = 1/3x+5 through the point (2,1)

Which of the following expressions is equal to 2x^2+8

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?

41/17 as a decimal rounded to the nearest hundredth