Find $f ( x )$ If $f ( 8 ) = 24$

question 39

Multiple Choice

Find $f ( x )$ if $f ( 8 ) = 24$ and the tangent line at $( x , f ( x ) )$ has slope x. ?

• A) \(f ( x ) = \frac { x ^ { 2 } } { 2 } - 8\)
• B) \(f ( x ) = \frac { x ^ { 2 } } { 2 } - C\)
• C) \(f ( x ) = - \frac { x ^ { 2 } } { 2 } + 8\)
• D) \(f ( x ) = \frac { x ^ { 2 } } { 2 } + C\)
• E) \(f ( x ) = \frac { x ^ { 2 } } { 2 } + 8\)

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