7. GO Tutorial The cost curve for producing widgets passes through the following points and is piecewise linear in between.

Units Produced Costs 0 $600 200 $1,200 400 $1,600 600 $1,800

a. What is the fi xed cost of producing 600 widgets?

b. What is the variable cost of producing 600 widgets?

c. What is the cost per unit if only 400 widgets are produced?

d. What is the incremental cost of producing the 100th widget?

e. What is the incremental cost of producing the 500th widget?

f. What is the fi xed cost per unit for producing 1,000 widgets?

g. What is the variable cost per unit for producing 1,000 widgets?