PRE CAL HELP N EEDED PLEASE THANK YOU
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Answer:
Electrician's fee: $50.
Charges per hour: $35
Step-by-step explanation:
Let x represent number of hours and y represent amount charged.
We have been given that an electrician charges $120 after 2 hours of work and $190 after 4 hours of work.
We can represent this information with two points as (2,120) and (4,190).
First of all, we will find slope using these points.
Now, we will slope-intercept form of equation to get our required equation as:
Substitute coordinates of point (2,120) to find the y-intercept.
Therefore, our required function would be .
The electrician's fee would be $50 as it the initial amount or y-intercept.
The electrician charges $35 per hour as the slope of the line is 35.