# Mathematics - Calculus - Functions

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C(x)=2x+56 R(x) = 20x-x2

a)Find the marginal cost function ?what does this function predict?

b)Find the profit function.

c)Find the marginal profit function ?what does this function predict?

d)What are the breakeven points?

e)Find the value of x, where the graph R(x) has a horizontal tangent.

https://brainmass.com/math/basic-calculus/mathematics-calculus-functions-216758

#### Solution Preview

(a) MC(x) = C?x) = 2. This means, it costs $2 to produce each additional unit.

(b) P(x) = R(x) ?C(x) = ...

#### Solution Summary

The expert examines marginal cost functions and profit functions for predictions. Complete, neat and step-by-step answers are provided.

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