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kogti [31]
2 years ago
12

Simplify the following expression: -3(x+6)+8x 3x-25 5x-22 -11+3x 5x-18

Mathematics
2 answers:
german2 years ago
5 0

Answer:

5x+18

Step-by-step explanation:

Alina [70]2 years ago
3 0

Answer:

5x -18

<h2>I hope this helped! </h2><h3>have a nice day! :)</h3>
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The table shows the number of books donated to a library each month. Suppose the growth continues exponentially.
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\bf \qquad \textit{Amount for Exponential Growth}\\\\&#10;A=I(1 + r)^t\qquad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\to &80\\&#10;I=\textit{initial amount}\\&#10;r=rate\to r\%\to \frac{r}{100}\\&#10;t=\textit{elapsed time}\to &0\\&#10;\end{cases}&#10;\\\\\\&#10;80=I(1+r)^0\implies 80=I\qquad therefore\qquad \boxed{A=80(1+r)^t}

we also know that on the first month there were 100 books,

\bf \qquad \textit{Amount for Exponential Growth}\\\\&#10;A=I(1 + r)^t\qquad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\to &100\\&#10;I=\textit{initial amount}\\&#10;r=rate\to r\%\to \frac{r}{100}\\&#10;t=\textit{elapsed time}\to &1\\&#10;\end{cases}&#10;\\\\\\&#10;100=80(1+r)^1\implies \cfrac{100}{80}=1+r\implies \cfrac{5}{4}=1+r&#10;\implies &#10;\cfrac{5}{4}-1=r&#10;\\\\\\&#10; \cfrac{1}{4}=r\implies 0.25=r\qquad therefore\qquad \boxed{A=80(1+0.25)^t}

now, how many books when t = 8?   A=80(1+0.25)⁸, or A=80(1.25)⁸.
7 0
3 years ago
Read 2 more answers
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2 years ago
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