SOLUTION: The vending machine on the fourth floor of your building sells bottles of soft drink at a price of $1 per bottle. Let X denote the number of bottles of soft drink sold each week.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The vending machine on the fourth floor of your building sells bottles of soft drink at a price of $1 per bottle. Let X denote the number of bottles of soft drink sold each week.       Log On


   



Question 5766: The vending machine on the fourth floor of your building sells bottles of soft drink at a price of $1 per bottle. Let X denote the number of bottles of soft drink sold each week.
A) What is the revenue function: R(x) = ?
B) If the fixed cost for the owner of this vending machine is $125 per week, and the wholesale cost of each bottle is 50 cents, what is the total cost function: C(x) = ?
C) What is the profit function: P(x) = ?
D) What is the Break- Even Point: BEP = ?

Answer by Abbey(339) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = the number of bottles sold
Revenue will equal $1 multiplied by the number of bottles sold,
R(x)=$1(x)
The fixed cost for the owner is $125 and the wholesale cost is 50 cents.
To create the cost function C(x), multiply the number of bottles sold by 50 cents and add $125 to the total:
C(x) = $.50(x) + $125
The profit function is the revenue function - the cost function:
P(x)=$1(x)-($.50(x)+$125)
Finally, the break even point will be when the revenue is equal to the cost:
$1x=$.50(x)+$125
convert the dollars and cents into fractions and integers:
x=%28x%2F2%29%2B125
subtract x%2F2 from both sides of the equation:
x-%28x%2F2%29=125
%28x%2F2%29+=+125
multiply both sides by 2:
x=250
so the break even point occurs when 250 cans of soft drinks have been sold.

This makes sense because if the machine sells 250 cans of soda, it has earned $250. the cost of 250 cans is $125 + the fixed cost of $125 = $250.