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Mariana [72]
3 years ago
9

To borrow​ money, you pawn your guitar. Based on the value of the​ guitar, the pawnbroker loans you ​$

Mathematics
1 answer:
Nonamiya [84]3 years ago
6 0
\bf \qquad \textit{Simple Interest Earned Amount}\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &\$1472\\
P=\textit{original amount}\to& \$1080\\
r=rate\\
t=years\to &\frac{1}{12}
\end{cases}
\\\\\\
1472=1080\left(1+r\cdot \frac{1}{12}\right)

notice, it was pawned for only 1 month, so the "yearly" rate is for 1 month, which is 1/12 of the year, since a year has 12 moths

you'll get a rate in decimal terms, to get the % amount, just multiply it times 100
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The second line, through (1, 1) and (2, -1) is the purple line.

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Both lines are included, since they are solid lines.



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The equation of the second line can be found as follows:

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thus the equation of the second line is :


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We have to decide on the direction of the inequality sign, so we pick a point, for example (0, 4) which is not in the colored regions of the lines, 

so we write the inequalities so that they do not hold for (0, 4)


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y≥x+4

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the shaded region is the solution to the system of inequalities:

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ii) y≤-2x+3

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