6 Consider the following cost information for a pie shop.

o dozen

41 qu h FhJV

$300

350

390

420

450

490

540

$0

50

90

120

150

190

240

a What is the pie shop' s fixed cost? b Construct a table in which you calculate the marginal cost per dozen pies using the information on total cost. Also calculate the marginal cost per dozen pies using the information on variable cost. What is the relationship between these sets of nurnbers? Explain.