the marginal cost c’(q) (in dollars per unit) of producing q units is given in the following table.
q 0 100 200 300 400 500 600
c(q) 25 20 18 22 28 35 45
(a) if the fixed cost is $10,000, estimate the total cost of producing 400 units. (use left and right hand estimates.)
(b) how much would the total cost increase if production were increased one unit, to 401 units?