You plan to set aside $500 for 5 years. The account pays annual interest of 8 percent, compounded quarterly. The ending balance (principal plus interest) will be ___at the end of 5 years.

$942.27

Explanation:

The applicable formula for this case is A = p x ( 1 + r) ^ n

Where A is the amount after 5 years

p = Principal amount: $500

r = Interest rate : 8 % or 0.08 per year.

        quarterly interest rate = 0.08/4 = 0.02

n = number of period : 8 year or 32 quarters (8 years  x 4 )

A = $500 x (1 + 0.02) ^32

A= $500 x (1.02)^32

A =$500 x 1.88454

A=$942.27

Amount after five years will be $942.27

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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