$\"\"$

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The function is $\"\"$ , $\"\"$ (car worth in dollars) in year $\"\"$ .

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(a)

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When will the car be worth $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Apply logarithm one to one property : if $\"\"$ ,then $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore,the car worth will be $\"\"$ after $\"\"$ years. $\"\"$

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(b)

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When will the car be worth $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Apply logarithm one to one property : if $\"\"$ ,then $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore,the car worth will be $\"\"$ after $\"\"$ years.

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$\"\"$

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(c)

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when will the car be worth $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Apply logarithm one to one property : if $\"\"$ ,then $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Therefore, the car worth will be $\"\"$ after $\"\"$ years.

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$\"\"$

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(a) The car worth will be $\"\"$ after $\"\"$ years.

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(b) The car worth will be $\"\"$ after $\"\"$ years .

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(c) The car worth will be $\"\"$ after $\"\"$ years.