A candle maker needs to know whether to package the candles in$-$house or outsource the packaging operation to a third$-$party warehouse company. In a given month, $10,000$ candles are sold. The following estimates have been made:

In$-$house

Outsource

Fixed cost per month

$$2,000$

$$0$

Variable cost per package

$$0\mathrm{.}45$

$$\mathrm{.}75$

a$.$ What is the annual cost to package the candles in$-$house?

b$.$ What is the annual cost to package with outsourced company?

c$.$ At what volume are they indifferent regarding the decision to package in$-$house or outsource?