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Hitman42 [59]
2 years ago
6

A car dealer earns $100 a week plus 5.5% on all sales. If he sold $57,000 in cars this week, how much did he earn?

Mathematics
1 answer:
Nana76 [90]2 years ago
7 0

Answer:

3235

Step-by-step explanation:

100 for the week plus 3135 which is 5.5% of 57,000

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Answer:

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Step-by-step explanation:

Recall that the minimum of a parabola generated by a quadratic expression is at the vertex of the parabola, and the formula for the vertex of a quadratic of the general form:

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And when x = 1, the value of "y" is:

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y-y_{vertex}=a\,(x-x_{vertex})^2

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y-(-4)=2\,(x-1)^2\\y=2\,(x-1)^2-4

Then, for the quadratic equal to zero as requested in the problem, we have:

y=2\,(x-1)^2-4=0\\2\,(x-1)^2-4=0\\2\,(x-1)^2=4

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