In order to calculate how much money Julie spent, let's multiply the price of each item by the number of that item bought, then we add all values:
[tex]\begin{gathered} \text{Total cost}=3\cdot19+5\cdot30+1\cdot37+2\cdot40 \\ \text{Total cost}=57+150+37+80 \\ \text{Total cost}=324 \end{gathered}[/tex]Therefore Julia spent $324.
