Data:
Sierra earns: $30 per day
Plus $5 for every sale she makes.
If you take x as the number of sales she makes you get the next equation for the eanrnings of one day (y):
[tex]y=5x+30[/tex]
As in thursday she wants to earn more than $60: y greather than 60:
[tex]\begin{gathered} y>60 \\ \\ 5x+30>60 \end{gathered}[/tex]
