Final answer:
The intersection of sets A and B, A ∩ B, is {8, 9}.
Step-by-step explanation:
The intersection of two sets, A and B, denoted as A ∩ B, consists of all the elements that are common to both sets. In this case, A = {1, 5, 7, 8, 9} and B = {a, g, h, 4, 3, 8, 9}. To find A ∩ B, we need to identify the elements that appear in both sets.
Comparing the elements in set A and set B, we can see that the common elements are 8 and 9. Therefore, A ∩ B = {8, 9}.