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The daily cost of having an electrician, y, to work x hours on a repair project can be modeled using a linear function. The electrician charges a fixed cost of $90 plus an additional cost of $42 per hour. The electrician works a maximum of 7 hours per day. For one day at work, write the domain of the function for this situation?

The daily cost of having an electrician y to work x hours on a repair project can be modeled using a linear function The electrician charges a fixed cost of 90 class=

Respuesta :

We have that the cost of the electrician is given according to the next function:

[tex]f(x)=42x+90[/tex]

If we can see, the question tells us that the electrician works a maximum of 7 hours per day.

Then, for one day at work, the domain of the function is:

[tex]0\leq x\leq7[/tex]

Then, the domain is the previous expression.

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