To find out how long Jeff practiced during the week, we can calculate the total hours of practice based on the information provided.
Jeff has practice 3 times this week, and each practice lasts for \( \frac{1}{2} \) hour.
So the total practice time can be calculated as follows:
\[ \text{Total practice time} = \text{Number of practices} \times \text{Duration of each practice} \] \[ \text{Total practice time} = 3 \times \frac{1}{2} = \frac{3}{2} \text{ hours} \]
\(\frac{3}{2}\) hours can also be expressed as 1 hour and 30 minutes.
So, the correct answer is:
A. 1.5 hours or 1 \(\frac{1}{2}\) hours.