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Jlenok [28]
3 years ago
6

What polynomial has a graph that passes through the given points? (-2, 2) (-1, -1) (1, 5) (3, 67) A. y = -x3 + 4x2 + 2x - 2 B. y

= x3 + 4x2 + 2x - 2 C. y = x4 + 4x3 + 2x2 - 2x D. y = x3 - 4x2 - 2x - 2
Mathematics
2 answers:
GalinKa [24]3 years ago
5 0

This 100% the correct answer

y = x3 + 4x2 + 2x - 2

LekaFEV [45]3 years ago
4 0
An easy this to do is use desmos... an online graphing site that will allow you to graph the curves and points... 

https://www.desmos.com/calculator

The alternate method is to subsitute each point into each equations... 

I just did (-2, 2) into A... that point is not on the curve.. that would be the hard way. Subsituting x = -2  y = 18 so (-2, 2) isn't on the curve. 

so eliminate A

repeat the process with B etc   is (-2, 2) in on the curve, then select the next point and check. 

That's why graphing is easier
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ivanzaharov [21]

Answer:

n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94

So the answer for this case would be n=94 rounded up to the nearest integer

Step-by-step explanation:

Information given

\bar X represent the sample mean

\mu population mean (variable of interest)

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Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{s}{\sqrt{n}}    (a)

And on this case we have that ME =120 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

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n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94

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