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Your weekly cost $($in dollars$)$ to manufacture $x$ bicycles and $y$ tricycles is

$C(x,y)=24,000+60x+40y$

Calculate and interpret $\frac{\text{d}\text{e}\text{l}\text{C}}{\text{d}\text{e}\text{l}\text{x}}$ and $\frac{\text{d}\text{e}\text{l}\text{C}}{\text{d}\text{e}\text{l}\text{y}}.$

$\frac{\text{d}\text{e}\text{l}\text{C}}{\text{d}\text{e}\text{l}\text{x}}=$

$\frac{\text{d}\text{e}\text{l}\text{C}}{\text{d}\text{e}\text{l}\text{y}}=$

$$

The marginal cost to manufacture bicycles is $$ which is $$

$$ J$.$

The marginal cost to manufacture tricycles is

which is $$

$$

The marginal costs $$ depend on the production level, since the cost function $---$Select$-$