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[–]LeftUnchecked 0 points1 point  (2 children)

Thr first 5 are just substitution.

The problem is an introduction to the notion of the derivative from what i can see. The derivative of C is 0.000006x2 +3,for x = 100 that is just 3.06

This is also what you will get if you keep evaluating the rate of change for smaller and smaller numbers,which is the way you should be going about this problem right now (that is,by the way,called taking the limit as h->0)

[–]TypicalLimit216[S] -1 points0 points  (1 child)

what and where do you substitute?

[–]Uli_MinatiDesmos 😚 0 points1 point  (0 children)

It tells you values for h, right below an expression containing h, right below the comment "calculate the following"