To find out how many dresses Reggie can make, we need to divide the total amount of fabric he has by the amount of fabric used for each dress.
Reggie's total fabric = 3 yards
Fabric used for each dress = \( \frac{3}{8} \) yard
Now, we perform the division:
\[ \text{Number of dresses} = \frac{3 \text{ yards}}{\frac{3}{8} \text{ yard/dress}} = 3 \times \frac{8}{3} = 8 \]
So, Reggie can make 8 dresses.