Question $3$

Table $14-10$

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 $$600$ a month and has leased computer equipment that costs $$480$ a month.

$\backslash$table$[[\backslash$table$[[$Output$],[($Instructio nal 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 $14-10.$ What is the marginal cost of creating the tenth instructional module in a given month?

$$ $$900$

$$ $$1,250$

$$ $$2,500$

$$ $$3,060$