Step-by-step explanation:
<u>The graph of a system of parallel lines will have no solutions. </u>
Because they will never intersect, having same slopes.
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<u>The graph of a system of equations with different slopes will have no solutions. </u>
Because they will intersect exactly once, having different slopes.
$60 for 2 hours and $100 in total for 2 hours of work and the service fee
The answer is 32/9 , or 1.68.