the whole thing says "A video down loading service charges $4 per video viewed. error *Daniel* got billed at the end of each month. what is the equation for the scenario?

Let:
x = Number of videos viewed
y = Total charge
a = charge per video
so:
[tex]\begin{gathered} y=ax \\ a=m=4 \\ so\colon \\ y=4x \end{gathered}[/tex]