Answer:
The bell product's demand will be 700 units multiplied by the annual percentage of population growth Demand = 700 * (1 + population growth in %).
Step-by-step explanation:
Making the forecast where the competitors will do the same and no other change in the market is expected, the changes in demands could occur because the population grows and changes in technology. Since the forecast is only for the next year, changes in technology are not included (usually affects the long-term).