3 years ago

Which of the following is a linear function?

Mathematics

1 answer:

katovenus [111]3 years ago

7 0

Answer:

Step-by-step explanation:

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The value of a motorbike depreciates by 32% per year. Work out the current value of a motorbike bought 5 years ago for £3600

DaniilM [7]

$\bf \qquad \textit{Amount for Exponential Decay}
\\\\
A=P(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &3600\\
r=rate\to 32\%\to \frac{32}{100}\to &0.32\\
t=\textit{elapsed time}\to &5\\
\end{cases}
\\\\\\
A=3600(1-0.32)^5\implies A=3600(0.68)^5\implies A\approx 523.41601$

3 0

3 years ago

40 miles x 25 min.=?mph

Natalka [10]

$\bf \stackrel{miles}{40}~in~\stackrel{minutes}{25}\implies \cfrac{40~miles}{25~\underline{minutes}}\cdot \cfrac{60~\underline{minutes}}{hr}\implies \cfrac{40\cdot 60~miles}{25~hr}
\\\\\\
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