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Algebra
Pregunta

Write an exponential decay model for each situatio...

Write an exponential decay model for each situation. The value of \( x \) for each value of \( f ( x ) \) will lie between two consecutive whole numbers. List the whole numbers. 

4. initial value: \( 1,000 \) decay rate: \( 20 \% \) 

\( f ( x ) = 500\) 

5. initial value: \( 1,800 \) decay rate: \( 7 \% \) 

\( f ( x ) = 400\) 

6. initial value: \( 1,200 \) decay rate: \( 12.5 \% \) 

\( f ( x ) = 450\) 

Answer

\(3,4\\20,21\\7,8\)

Solución
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