Using the following functions, f(x)=3x-4 and g(x)=2x-7, construct an operation of functions problem and tell the answer to your problem?

Pls! does anybody know a shortcut for answering these types of questions in the future?

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 are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2