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1 answer:
Answer:
59.) 80 smokers, 280 nonsmokers.
61.) 240 men, 200 women
Step-by-step explanation:
59.)
Start with:
Cross product.
Subtract from both sides of the equation.
Add to both sides of the equation.
Divide by
Substitute in your x-value.
61.)
Start with:
Combine like terms.
Divide by the coefficient of , which is
Substitute.
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Answer:
or 12.5
Step-by-step explanation:
So if 25 - x items are sold, and they each cost x, we can write an equation for the revenue to be
y = (25 - x)x
The vertex of this equation will represent the maximum revenue. So we need to write this equation in vertex form so we can find the vertex.
Vertex from is
y = a(x - h)^2+ k,
where (h,k) represent the vertex.
the vertex form of this equation would be
And the vertex would be
This means the maximum revenue will occur when x = 25/2
