Answer:
Here  b = -14
Step-by-step explanation:
The number of weeks Paco has been a member : a
The number of weeks Marlon has been a member : b
Now, according to the question
b + 17 Â = a
Now, here given a = 3
So, b + 17 Â = 3 Â or, Â Â b = 3 -17 = -14
  ⇒ b = -14