Walter used to work as a high school teacher for $40,000 per year but quit in order to start his own painting business. to invest in his painting business, he withdrew $20,000 from his savings, which paid 3 percent interest, and borrowed $30,000 from his uncle, whom he pays 3 percent interest per year. last year walter paid $25,000 for supplies and had revenue of $60,000. walter asked tyler the accountant and greg the economist to calculate his painting business’s costs. a. tyler says his costs are $25,900, and greg says his costs are $66,500.b. tyler says his costs are $25,000, and greg says his costs are $65,000.c. tyler says his costs are $66,500, and greg says his costs are $66,500.d. tyler says his costs are $75,000, and greg says his costs are $41,500.

a. Tyler says his costs are $25,900, and Greg says his costs are $66,500.

Explanation:

We know accounting cost is the expenditure made on ingredients by the company which is, $25000 that Walter paid for supplies last year. Walter also paid 3 % interest to his uncle,

Interest to the uncle = (30000*3)/ 100

                                   = $900

total accounting cost that an accountant quotes = 25000 + 900

                                                                                 = $25,900

According to the economist explicit cost is $25900. We also include implicit cost in it. If Walter would not be a business then he would be earning $40000 as teacher and $600 interest from savings bank account.

total economic cost according to economist = 25900 + 40000 + 600

                                                                           = $66,500

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.'

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explanation:

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