SOLUTION: Rosa has decided to sell pet rocks at an art fair for $5 each. She paid $50 to rent a table at the fair and it costs her $2 to package each rock with a set of instructions. For wha
Algebra ->
Inequalities
-> SOLUTION: Rosa has decided to sell pet rocks at an art fair for $5 each. She paid $50 to rent a table at the fair and it costs her $2 to package each rock with a set of instructions. For wha
Log On
Question 821318: Rosa has decided to sell pet rocks at an art fair for $5 each. She paid $50 to rent a table at the fair and it costs her $2 to package each rock with a set of instructions. For what numbers of sales will Rosa make a profit? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Rosa has decided to sell pet rocks at an art fair for $5 each. She paid $50 to rent a table at the fair and it costs her $2 to package each rock with a set of instructions. For what numbers of sales will Rosa make a profit?
-----
Cost:: C(x) = 50+2x where "x" is the number of rocks
Revenue: R(x) = 5x
-------
Profit = R(x)-C(x)
-------
Solve 5x - (50+2x) > 0
3x > 50
x > 16 2/3
------
Ans: She needs at least 16 sales.
--------------------------------
Cheers,
Stan H.
==================
(