SOLUTION: Aki's Bicycle Designs has determined that when x hundred bicycles are buiklt ,the average cost per bicycle is given by C(x)=0.1x^2-0.2x+3.511,where C(x) is in hundreds of dollars.

Algebra ->  Equations -> SOLUTION: Aki's Bicycle Designs has determined that when x hundred bicycles are buiklt ,the average cost per bicycle is given by C(x)=0.1x^2-0.2x+3.511,where C(x) is in hundreds of dollars.       Log On


   



Question 414284: Aki's Bicycle Designs has determined that when x hundred bicycles are buiklt ,the average cost per bicycle is given by C(x)=0.1x^2-0.2x+3.511,where C(x) is in hundreds of dollars.
How many bicycles should the shop build to minimize the average cost per bicycle?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
C%28x%29+=+.1x%5E2+-+.2x+%2B+3.511
You want to find the vertex of this curve
It's in the form
y+=+a%2Ax%5E2+%2B+b%2Ax+%2B+c
The vertex is at V(x,y) where x+=+-b%2F%282a%29
-b%2F%282a%29+=+-%28-.2%29%2F%282%2A.1%29
-b%2F%282a%29+=+.2%2F.2
-b%2F%282a%29+=+1
and
C%281%29+=+.1%2A1%5E2+-+.2%2A1+%2B+3.511
C%281%29+=+.1+-+.2+%2B+3.511
C%281%29+=+3.411
They should build 100 bicycles to minimize cost, which would be $341.10 per bicycle
Here's a plot (in hundreds of dollars and hundreds of bicycles)
+graph%28+400%2C+400%2C+-.5%2C+10%2C+-.5%2C+10%2C++.1x%5E2+-+.2x+%2B+3.511%29+