uide questions: 1. How many possible number of facemask and face shield can an online seller could sell to get an amount of at least Php2 000 based on the data above? 2. How did you come up with the number of face mask and the number of face shield which will gain at least Php 2 000? 3. Did you encounter difficulty in determining them? 4. Does the total amount decreases increases as the number of items decreases/increases? 5. Are there other possible numbers of face mask and face shield that would still yield to an amount of at least Php 2000? How many combinations can you get?​