1. describe two ways the numbers in each proportion are related.
a) 5: 20 = 125: 500 b) 10: 1 = 120: 12 c) 75: 25 = 300: 100
d) 1: 3 = 16: 48
2. multiply between ratios to determine each value of n.
a) 2: 5 = 8: n b) 2: n = 6: 9 c) n: 5 = 12: 20
d) 8: n = 4: 15
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3. multiply within ratios to determine each value of z.
a) 4: 8 = 3: 2 b) 5: 2 = 6: 18 c) z: 14 = 10: 20
d) 3: 21 = z: 56

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step-by-step explanation:

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answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

the equation is not included but the answer is (1.50, 2.00, 2.75)

step-by-step explanation:

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