Answer:
The number of hours is the independent variables and the total cost is the dependent variable.
Step-by-step explanation:
From statement we get a linear function for modelling costs as a function of the number of hours rented. The standard form of the linear function is:
[tex]y = m\cdot x + b[/tex] (Eq. 1)
Where:
[tex]x[/tex] - Independent variable, measured in hours.
[tex]y[/tex] - Dependent variable, measured in US dollars.
[tex]m[/tex] - Slope, measured in US dollars per hour.
[tex]b[/tex] - y-Intercept, measured in US dollars.
Hence, the number of hours is the independent variables and the total cost is the dependent variable.