An economist estimated that the cost function of a single$-$product firm is$,$

C$($Q$)=13\mathrm{.}6+12\mathrm{.}5$Q$+4\mathrm{.}6$Q$2+8\mathrm{.}3$Q$3.$

What is the fixed cost at Q$=10$

$?$

What is the variable cost at Q$=10$

$?$

What is the total cost at Q$=10$

$?$

What is the average fixed cost at Q$=10$

$?$

What is the average variable cost at Q$=10$

$?$

What is the average total cost at Q$=10$

$?$

What is the marginal cost at Q$=10$

$?$