Respuesta :

[tex]\$0.05\ per\ minute=0.05\ \$/min\\\\1h=60min\Rightarrow1min=\frac{1}{60}h\\\\therefore\\\\0.05\ \$/min=0.05\cdot\frac{\$}{\frac{1}{60}\ h}=0.05\cdot60\ \$/h=\boxed{3\ \$/h}[/tex]