Explain why the equation of a horizontal line is y = b. e

With this one. will mark brainliest

Having a hard time understanding this question (see attachment).

Jack is considering a list of features and fees for current bank: jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements? a. $44 b. $104 c. $144 d. $176