For the given cost function C(x) = 250sqrt(x) + (x^2 / 343000) find the following. For average and marginal costs, give at least 3 decimal places.

a) The cost when producing 1750 items: $______

b) The average cost when producing 1750 items: $______/item

c) The marginal cost when producing 1750 items: $______/item

d) The production level that will minimize the average cost: ______ items

e) The minimal average cost: $_______/item