Answer:
y = (0.5 pounds/month)x + 12 pounds
Step-by-step explanation:
Let y be the weight of the object and x the time in months.
y = 12 (pounds) at month 0
y = (0.5 pounds/month)*x is the amount added for each additional month afterwards.
y = (0.5 pounds/month)x + 12 pounds
