Here is the problem we are doing rational expressions in a class and i dont know where this question comes in too play, maybe it was just thrown in there, but its confusing me, maybe its really easy and im just not seeing it so help would be great
KANSAS ALGEBRA PROGRAM (KAP) www.math.ku.edu/kap MATH 101 ::
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A company that manufactures wheelchairs has fixed costs of 400,000$. The average cost per wheelchair,C,for the company to manufacture,x,wheelchairs per month is modeled by the formula
C= 200x +400,000
-----------------------
x
(thats a fraction var by the way)
How many wheelchairs can be produced at an avergage cost of $220 per chair
show how you are getting answer
this problem is easy as long as you know where to plug in the variables.
So, i assume by the phrase average cost per chair is 220$ that this will be plugged into C and that i'm solving for x. so, 220=200x+400,000.
Now, i'm going to subtract 400,000 by both sides. -400,000+220=200x.
-399780=200x. now. divide by 200 on both sides (or multiply by 1/200).
-399780/200=x. now we just simplify, so x=-1998.9 or -19989/10
400,000 = 220x
solve for x
round down to nearest whole number
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