Table $13-10$

Teacher's Helper is a small company that has a subcontract to produce instructional materials for disabled children in public school districts. The owner rents several small rooms in an office building in the suburbs for $\backslash (\backslash$$ $600\backslash )$ a month and has leased computer equipment that costs $\backslash (\backslash$$ $480\backslash )$ a month.

$\backslash$begin$\{$tabular$\}\{|$c$|$c$|$c$|$c$|$c$|$c$|$c$|$c$|\}$

$\backslash$hline $\backslash$begin$\{$tabular$\}\{$l$\}$

Output $\backslash \backslash$

$($Instructional modules per month$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Fixed Cost $\backslash \backslash$

$($Dollars$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Variable Cost $\backslash \backslash$

$($Dollars$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Total Cost $\backslash \backslash$

$($Dollars$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Marginal Cost $\backslash \backslash$

$($Dollars$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Average Fixed Cost $\backslash \backslash$

$($Dollars per unit$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Average Variable Cost $\backslash \backslash$

$($Dollars per unit$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$l$\}$

Average Total Cost $\backslash \backslash$

$($Dollars per unit$)$

$\backslash$end$\{$tabular$\}\backslash \backslash$

$\backslash$hline $0$ & $1,080$ & & & & & & $\backslash \backslash$

$\backslash$hline $1$ & $1,080$ & $400$ & $1480$ & $400$ & & & $\backslash \backslash$

$\backslash$hline $2$ & & & & $450$ & & & $965\backslash \backslash$

$\backslash$hline $3$ & & $1,350$ & $2,430$ & & & & $\backslash \backslash$

$\backslash$hline $4$ & & $1,900$ & & & & $475$ & $\backslash \backslash$

$\backslash$hline $5$ & & $2,500$ & & & $216$ & & $\backslash \backslash$

$\backslash$hline $6$ & & & $4,280$ & $700$ & & & $\backslash \backslash$

$\backslash$hline $7$ & & $4,100$ & & & & & $\backslash \backslash$

$\backslash$hline $8$ & & $5,400$ & & & $135$ & & $\backslash \backslash$

$\backslash$hline $9$ & & $7,300$ & & & & & $\backslash \backslash$

$\backslash$hline $10$ & & & $10,880$ & & & $980$ & $\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$

Refer to Table $13-10.$ What is the average fixed cost for the month if $9$ instructional modules are produced?

a$.\backslash (\backslash$$ $120\mathrm{.}00\backslash )$

b$.\backslash (\backslash$$ $150\mathrm{.}00\backslash )$

c$.\backslash (\backslash$$ $108\mathrm{.}00\backslash )$

d$.\backslash (\backslash$$ $811\mathrm{.}11\backslash )$