a$.$ A $$50$ increase in the unit selling price should result in a $4,000$ unit decrease in monthly sales.

increasing by $50\%.$

administrative costs of $$1,500.$

administrative costs of $$2,000.$ Assume overtime production is not possible.

Increase of

$,$

will be able to reduce variable manufacturing costs by $5\%,$ reduce fixed costs by $$10,000,$ and rent out some freed$-$up space for $$8,000$ per month.

Advantage of making

$0$

$$290$ per unit.