If the total profit function is $P(x)=6x-20,$ find the marginal profit $\frac{?}{\text{b}\text{a}\text{r}}(MP).$

$\frac{?}{\text{b}\text{a}\text{r}}(MP)=$

What does this mean?

This is the total cost.

This is the total profit.

This is the total revenue.

The next unit sold costs this much to make.

The next unit sold earns this much profit.

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