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The dollar value v(t) of a certain car model that is t years old is given by the following exponential function. v(t)=29,900(0.78)^tFind the initial value of the car and the value after 12 years.

The Dollar Value Vt Of A Certain Car Model That Is T Years Old Is Given By The Following Exponential Function Vt29900078tFind The Initial Value Of The Car And T class=

Sagot :

Answer:

(a)Initial Value: $29,900

(b)Value after 12 years: $1516.37

Explanation:

Given the dollar value v(t) of a certain car model that is t years old as:

[tex]v\mleft(t\mright)=29,900\mleft(0.78\mright)^t[/tex]

(a)Initial Value

At initial value, that is, when the car was just purchased, t=0

[tex]\begin{gathered} v\mleft(t\mright)=29,900\mleft(0.78\mright)^t \\ \implies v\mleft(0\mright)=29,900\mleft(0.78\mright)^0=29,900\times1=29,900 \end{gathered}[/tex]

The initial value of the car is $29,900.

(b)The value after 12 years.

When t=12

[tex]\begin{gathered} v\mleft(t\mright)=29,900\mleft(0.78\mright)^t \\ \implies v\mleft(12\mright)=29,900\mleft(0.78\mright)^{12}=\$1516.37 \end{gathered}[/tex]

The value of the car after 12 years is $1516.37.

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