Bolka corporation, a merchandising company, reported the following results for october: sales $ 433,000 cost of goods sold (all variable) $ 174,800 total variable selling expense $ 25,600 total fixed selling expense $ 15,100 total variable administrative expense $ 14,800 total fixed administrative expense $ 31,400 the contribution margin for october is:

$217,800

Explanation:

The formula to compute the contribution margin is shown below:

= Sales - Cost of goods sold (all variable) - Total variable selling expense - Total variable administrative expense

= $433,000 - $174,800 - $25,600 - $14,800

= $217,800

As contribution margin = Sales - variable cost

And, we done the same.

All other information which is given is not relevant. Hence, ignored it

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.'

answer; ///i believe the correct answer is(e) complementary to each other;