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The amount charged is an illustration of a linear equation.
Tina charges $39 for 4 hours
The given parameters are:
--- amount charged for the first hour
--- amount charged for the extra hours
If Tina babysits for 4 hours, it means that:
- <em>She will charge $15 for the first hour</em>
- <em>$8 for the extra 3 hours</em>
<em />
So, the total charges is:
The ordered pair is (4,39)
It means that:
She charges $39 for 4 hours
Read more about linear functions at: