To determine how many hours Shantel must work each month to earn a monthly profit of at least $600.00, we will first calculate her required monthly earnings and then the number of hours she needs to work.
1. **Calculate total required earnings:**
Shantel wants to achieve a profit of at least $600.00, and her monthly expenses are $3,200.00. Thus, her total required earnings can be calculated as:
\[
\text{Total earnings} = \text{Monthly expenses} + \text{Desired profit}
\]
\[
\text{Total earnings} = 3200 + 600 = 3800
\]
2. **Calculate the number of hours needed to earn this amount:**
Since Shantel charges $25.00 per hour per student, we can find the number of hours she needs to work by dividing her total required earnings by her hourly rate:
\[
\text{Hours needed} = \frac{\text{Total earnings}}{\text{Hourly rate}}
\]
\[
\text{Hours needed} = \frac{3800}{25} = 152
\]
Therefore, Shantel must work **at least 152 hours** each month to earn a monthly profit of at least $600.00.