Mrs. Jones got a new freezer. She plugged it in, and it began to get cold. The

1 answer:

5 0

The rate of change for one hour is 4°.
When you look at the problem it says the temperature dropped 24° in 6 hours . So if you divided 24 by 6 you get 4 which is the rate at which the temperature dropped per hour.

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Write the equation of the line with a slope of 3/7 passing through the point (9,-2) in standard or slope-point form? ...?

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$y-y_1=m(x-x_1)
\\
\\ m= \frac{3}{7} 
\\
\\(9,-2) \Rightarrow x_1=9,y_1=-2
\\
\\ y-(-2)=\frac{3}{7} (x-9)
\\
\\y+2=\frac{3}{7}x-\frac{27}{7}
\\
\\y=\frac{3}{7}x-\frac{27}{7}-2
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\\y=\frac{3}{7}x-\frac{41}{7}$

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A. Is this an arithmetic sequence? How do you know?

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a. Yes. The difference is common and equal to $1750

b. $1750

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y = 1750x + 20000

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