The number of hours worked by employee can be determined as,
[tex](4\colon30+12\colon00)-9\colon00-0\colon30=7[/tex]The amount earned by the employee can be determined as,
[tex]\begin{gathered} A=7\times9.50 \\ =66.5 \end{gathered}[/tex]Thus, the amount earned on Monday is $ 66.5.