To determine how many servings Haneef can make, we need to calculate based on the amount of couscous he has and the amount needed per serving.
Each serving of couscous requires half a cup. Haneef has seven cups of couscous.
To find the number of servings he can make, we divide the total amount of couscous by the amount needed per serving:
\[ \text{Number of servings} = \frac{\text{Total couscous}}{\text{Couscous per serving}} = \frac{7 \text{ cups}}{0.5 \text{ cups/serving}} = 14 \text{ servings} \]
Since he can indeed make 14 servings and uses all of the 7 cups of couscous by using half a cup per serving, this is a viable solution.
Thus, the correct response is:
14 servings, and yes, it is a viable solution.