Jessique sells handbags for $50 each
she spends $4 per handbag for materials
and $1,000 to rent a store each month.
write an expression that shows how
much profit jessique will earn in one
month if she sells x handbags.

Material:4x

Sells handbags earn:50x

Rent:1000

=50x-4x-1000=46x-1000

50x - 4x - 1000 = y

46x - 1000 = y

X is number of handbags sold.  Y is profit.

the 4x in the first expression is known as a variable cost to the business because that cost varies depending on how much she sells.  The $1000 is a fixed cost since it has to be paid whether or not she sells any bags.  To see her break even point we use the $46x - 1000 = y equation.  Since $46 is the profit per bag, we see how many bags it takes to make $1000 in this equation.  

$46x = $1000

x = 21.73

The answer is 22 bags because you cannot sell .73  bags.

This is not factoring tax into consideration though.

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