Retail Store

The Dollar Retailer sells all its products for $$1$ per unit in its New Orleans store. The retailer pays $$\mathrm{.}75$ per unit $($on average$)$ to a supplier. Fixed costs are $$5,000$ per month which consists of: $$1,400$ rental; $$600$ utilities; $$3,000$ salaries of store employees. Answer each question independently.

a$.$ Calculate the break even point $($in units$)$ per month.

$[20,000$ units$]$

b$.$ If the rent is doubled, what is the break$-$even point $($in units$)?$

$[25,600$ units$]$

c$.$ If the supplier raises its price to $$\mathrm{.}80$ per unit, what is the break$-$even point $($in units$)?$

$[25,000$ units$]$