2 credit hours
Explanation:
Given
14x + 16y = 74
Required
Determine the number of credit hours y greater than x
From the question, we understand that
y => spring semesters
x => fall semesters
From the equation,
14 represent the number of credit hours in each fall semester
16 represent the number of credit hours in each spring semester
Calculate the difference.
Difference = 16 hours - 14 hours
Difference = 2 hours
Hence, the student take 2 more hours in each spring semester than in each fall semester