Mashaal Masha
The graph represents the total charge, in dollars, by an electrician for $\bm{x}$ hours of work. The electrician charges are onetime fee plus an hourly rate. What is the best interpretation of the slope of the graph?

 

Difficulty: Medium
A: 

The electrician's hourly rate

B: 

The electrician's onetime fee

C: 

The maximum amount that the electrician charges

D: 

The total amount that the electrician charges

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