$1$:

$2$:

$3$:

$4$:

$\backslash$table$[[\backslash$table$[[$Output$],[($Instructional$],[$modules per month$)]],\backslash$table$[[$Fixed$],[$Cost$],[($Dollars$)]],\backslash$table$[[$Variable$],[$Cost$],[($Dollars$)]],\backslash$table$[[$Total$],[$Cost$],[($Dollars$)]],\backslash$table$[[$Marginal$],[$Cost$],[($Dollars$)]],\backslash$table$[[$Average$],[$Fixed Cost$],[($Dollars per unit$)]],\backslash$table$[[$Average$],[$Variable Cost$],[($Dollars per unit$)]],\backslash$table$[[$Average$],[$Total Cost$],[($Dollars per unit$)]]],[0,1,080,,,,,,],[1,1,080,400,1480,400,,,],[2,,,,450,,,965],[3,,1,350,2,430,,,,],[4,,1,900,,,,475,],[5,,2,500,,,216,,],[6,,,4,280,700,,,],[7,,4,100,,,,,],[8,,5,400,,,135,,],[9,,7,300,,,,,],[10,,,10,880,,,980,]]$

Refer to Table $13-10.$ What is the average variable cost for the month if $6$ instructional modules are produced?

a$)$ $$700\mathrm{.}00$