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12.4 Exercise 84

Avg difficulty 2.5

The cost of producing x x cellphones is described by the function C(x)= x 2 −4x+1000. C \left(x\right) = x^{2} - 4 x + 1000.

Find the approximate marginal cost, when 20 cellphones have been produced, of producing the 21st cellphone.

OpenStax Precalculus 2e, 12.4 Derivatives, exercise 84

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.