To evaluate the expression \(17h + 25m\) for \(h = 15\) and \(m = 3\), we will substitute the values of \(h\) and \(m\) into the expression.
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Start with the expression:
\[ 17h + 25m \] -
Substitute \(h = 15\) and \(m = 3\):
\[ 17(15) + 25(3) \] -
Calculate \(17(15)\):
\[ 17 \times 15 = 255 \] -
Calculate \(25(3)\):
\[ 25 \times 3 = 75 \] -
Add the two results together:
\[ 255 + 75 = 330 \]
Thus, Mary earns a total of $330 this week.