Each question is to be answered in 3-4 complete sentences.

Suppose that your company makes 20 doorbells at a cost of $180 per month. They can increase production to 30 doorbells at a cost of $300 per month.

How much does it cost to produce one doorbell at each production level?

The Company should pick a production of 30 doorbells if the price is above? $__.__

If doorbells sell for $10 each what production level should the company pick and why?

Why is there a decrease in efficiency?