SOLUTION: can someone please help: Write a cost function for the problem. Assume that the relationship is linear. Marginal cost,$40; 70 items cost $3800 to produce a. C(x) = 14x + 3

Question 166063: can someone please help:
Write a cost function for the problem. Assume that the relationship is linear.
Marginal cost,$40; 70 items cost $3800 to produce
a. C(x) = 14x + 3800
b. C(x) = 40x + 1000
c. C(x) = 40x + 3800
d. C(x) = 14x + 1000
Answer by midwood_trail(310) (Show Source): You can put this solution on YOUR website!
Marginal cost,$40; 70 items cost $3800 to produce
a. C(x) = 14x + 3800
b. C(x) = 40x + 1000
c. C(x) = 40x + 3800
d. C(x) = 14x + 1000
I assume that C(x) = marginal cost.
Let x = number of items, which is 70.
I would say the correct linear equation is choice (c).
If you want to know the marginal cost, you would replace every x with 70 and simplify your equation.

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