Question

Aisha just received a paycheck from her new job she spends some of it buying music online and saves the rest in a bank account her savings is given by y=50-1.99x where x is the number of songs she downloads at $1.99 per song write the equation in function notation

Answer 1

With Function Notation, f(x) just means the y. Since the equation is y = 50 - 1.99x you just replace y with f(x). If they ask you to solve the equation you created just plug in the number of songs into x. Example: x=5 so f(5)
Hope I helped!