Answer:
The third choice. (1/2)f + 3
Explanation:
"Three more than" means you will add 3 to what you stared with, in this case, 3 more than f. "More than" means you add in math terminology
"Half as many" means you will divide something by 2 because there are half as much as what you started with. In this case, there are half as many as f, so this person has f/2, or (1/2)f.
Putting the two phrases together gives you (1/2)f + 3