Pregunta
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The value of Huda's business computer is decreasing by \( 15 \% \) each year. Its value, in dollars, \( x \) years from now will be \( 3,000\left(\frac{17}{20}\right)^{x} \). How much is the computer worth now? Show your work.

Ask by Salinas Nguyen. in the United States
Mar 20,2025

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The current value of Huda's business computer is \$3,000.

Solución

To find the current value of Huda's business computer, we need to analyze the given information. The value of the computer decreases by \( 15\% \) each year, which means it retains \( 85\% \) of its value each year. The formula for the value of the computer \( V \) after \( x \) years can be expressed as: \[ V = V_0 \cdot (0.85)^x \] where \( V_0 \) is the current value of the computer. According to the problem, the value of the computer \( x \) years from now is also given by: \[ V = 3000 \left(\frac{17}{20}\right)^{x} \] Now, we can set these two expressions for \( V \) equal to each other: \[ V_0 \cdot (0.85)^x = 3000 \left(\frac{17}{20}\right)^{x} \] To find \( V_0 \), we can rearrange the equation: \[ V_0 = \frac{3000 \left(\frac{17}{20}\right)^{x}}{(0.85)^{x}} \] Now, we can simplify the right side. Notice that \( \frac{17}{20} \) can be expressed in terms of \( 0.85 \): \[ \frac{17}{20} = 0.85 \] Thus, we can rewrite the equation as: \[ V_0 = 3000 \cdot \left(\frac{17}{20} \cdot \frac{1}{0.85}\right)^{x} \] Now, we can calculate \( \frac{17}{20} \cdot \frac{1}{0.85} \): \[ \frac{17}{20} \cdot \frac{1}{0.85} = \frac{17}{20} \cdot \frac{20}{17} = 1 \] This means that the expression simplifies to: \[ V_0 = 3000 \] Thus, the current value of Huda's business computer is: \[ \boxed{3000} \]

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Extra Insights

To find the current value of Huda's business computer, we start with the formula given for its future value: \[ V(x) = 3000 \left(\frac{17}{20}\right)^x \] The decay rate is \( 15\% \), which means the computer retains \( 85\% \) of its value each year. Therefore, the base of the decay can be expressed as: \[ \frac{17}{20} = 0.85 \] To find the current value \( V(0) \) (the worth of the computer now), we need to set \( x = 0\): \[ V(0) = 3000 \left(\frac{17}{20}\right)^0 = 3000 \times 1 = 3000 \] Thus, the current value of the computer is \( \text{dollars } 3000 \). So, after calculating, we find: \[ \text{Current value of the computer} = \$3000 \]

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