Somebody help me out please

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?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that