SOLUTION: . Solve the following system of equations. 3x + 4y = 4 2x + y = 6 2. Solve the following system of equations. 2x - 3y = 13 5x + 2y = 4 3. Th

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Question 429179: . Solve the following system of equations.




3x + 4y = 4
2x + y = 6



2. Solve the following system of equations.




2x - 3y = 13
5x + 2y = 4


3. The Kraft Co. manufactures computer chips at a variable cost of $4 per chip and sells them for $10 each. If the fixed cost is $12,000 per month, what is the number of chips they would need to produce at the break-even point?


4. The Sunshine Bakery sells pies at a fixed price of p dollars per pie. The total number of pies demanded daily, D, is related to the price, p, in dollars by the equation:




D = -10p + 200


On the other hand, the daily supply of pies, S, is related to the price, p, per pie by the equation:




S = 15p - 50


Determine the equilibrium price of pies; that is, the price at which the supply, S, and demand, D, are equal.


Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi

3x + 4y = 4

2x + y = 6 



 3x + 4y = 4

-8x -4y = -24

   -5x = -20

     x = 4 and y = -2  (y = 6-2*4)



2x - 3y = 13

5x + 2y = 4 



2x    - 3y = 13

15/2x + 3y = 12/2   |mulitplying 2nd EQ thru by 3/2

 9.5x = 19

    x = 2  and y = -3   (y = -5/2x + 2)    |10-6 = 4



3) $6 profit per bag  $12000/$6 = 2000bags





4) -10p + 200  = 15p - 50 

      250 = 25p

       $10 = p







 

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