Answer:
Very little information is given, leaving room to multiple possible functions, however i would expect it to be y = 4x
Step-by-step explanation:
x * z = y
4 * z = 16
z = 16/4
z = 4
The answer to the question is 30
4 hours? i may be wrong
i did - 60 * 15
seems about right, since 50% would be 7.5 hours?