The table below gives the total cost, $C=f(n)$, for a carpenter to build $n$ wooden chairs.

Evaluate each of the expressions below:

(a) $f( 5 ) =$
(b) $f( x ) =$ if $x = 20$
(c) $z =$ if $f(z) = 6700$
(d) $f( 0 ) =$

For each of the statements below decide which (if any) expression (a)-(d) above it correctly describes by selecting the appropriate letter in each pull-down menu. An expression may be described correctly by more than one statement, and some statements may not match any of the expressions.

(e) The total number of chairs that can be built at a cost of $6700. Choose letter of expression (a) (b) (c) (d) None of the above .

(f) The total number of chairs that can be built at a cost of of $20. Choose letter of expression (a) (b) (c) (d) None of the above .

(g) The total number of chairs the carpenter must build in order to break even. Choose letter of expression (a) (b) (c) (d) None of the above .

(h) The cost of building 20 chairs. Choose letter of expression (a) (b) (c) (d) None of the above .

(i) The cost of building 5 chairs. Choose letter of expression (a) (b) (c) (d) None of the above .

(j) The fixed costs of the carpenter. Choose letter of expression (a) (b) (c) (d) None of the above .