we know it costs $41 for 9 hours, how much will it be for 1 hour?
[tex]\begin{array}{ccll} \${data-answer}amp;hours\\ \cline{1-2} 41&9\\ x&1 \end{array}\implies \cfrac{41}{x}=\cfrac{9}{1}\implies \cfrac{41}{x}=9\implies 41=9x \\\\\\ \cfrac{41}{9}=x\implies 4.56=x[/tex]