SOLUTION: Cost Equation Use the cost equation to find the number of units (x) that a manufacturer can produce for the cost (C). Round your answer to the nearest positive integer. C= 0.5x^2

Question 180630: Cost Equation
Use the cost equation to find the number of units (x) that a manufacturer can produce for the cost (C). Round your answer to the nearest positive integer.
C= 0.5x^2 + 15x + 5000 C=$11,500
I have been stuck on this question for a couple days now. Can you please help me? I don't even know where to start!Thanks!
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
You want to find x so that C(x)=11500.

In other words, find the zeros of this quadratic equation and you'll have your solution.
You can factor this equation or use the quadratic formula to solve it.

We'll only solve for the positive solution since the negative solution in this case doesn't make sense.

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