Mcmurtry Corporation sells a product for $250 per unit. The product's current sales are 13,600 units and its break-even sales are 10,608 units. The margin of safety as a percentage of sales is closest to:

22%

Explanation:

Margin of Safety is the amount by which sales can fall before making a loss.

Margin of Safety = Expected Sales - Break-even Sales ÷ Expected Sales

                           = (13,600 - 10,608) ÷ 13,600

                           = 0.22 or 22%

answer; i believe the correct answer is (75 years);

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'