A laundry owner's estimate of her weekly profits, is given by the equation p=-4w2+160w, where w represent the number of workers
she hires. What is the number of workers she should hire in order to earn the greatest profit?
1 answer:
Answer:
Number of workers = 20.
Step-by-step explanation:
p = - 4w^2 + 160 w
We need to find the value of w when p is a maximum.
We need to convert the equation to vertex form:
p = -4w^2 + 160w
p = -4(x^2 - 40w)
p = -4 [ (x - 20)^2 - 400]
p = -4(x - 20)^2 + 1600.
So the vertex is at (20 , 1600)
The maximum profit is 1600 and the number of workers = 20.
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