Given:
Amount earned, A=$252.
The number of hours of work, T=12.
The amount earned for one hour work is,
[tex]E=\frac{A}{T}=\frac{252}{12}=21[/tex]Now, the amount earned for t=17 hour work is,
[tex]A^{\prime}^{^{\prime}}=E\times t=21\times17=357[/tex]Therefore, Teresa would make $357 for 17 hour work.