18. Suppose that the cost function for a commodity is C(x) = 300 + 6x + 0.05x² dollars (a) Find the marginal cost at x = 8 units and tell what this predicts about the cost of producing 1 additional unit. (b) Calculate C(9) - C(8) to find the actual cost of producing 1 additional unit.

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18. Suppose that the cost function for a commodity is
C(x) = 300 + 6x + 0.05x² dollars
(a) Find the marginal cost at x = 8 units and tell
what this predicts about the cost of producing
1 additional unit.
(b) Calculate C(9) — C(8) to find the actual cost of
producing 1 additional unit.
TCL
CA
8
3
2
- 3x + 2x
Pla
Transcribed Image Text:18. Suppose that the cost function for a commodity is C(x) = 300 + 6x + 0.05x² dollars (a) Find the marginal cost at x = 8 units and tell what this predicts about the cost of producing 1 additional unit. (b) Calculate C(9) — C(8) to find the actual cost of producing 1 additional unit. TCL CA 8 3 2 - 3x + 2x Pla
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