Evaluate the rational function.
-$$r ( x ) = \frac { 17 } { x ^ { 2 } - 9 x + 20 } , r ( - 8 )$$
A) Undefined
B) $\frac { 17 } { 156 }$
C) $\frac { 1 } { 78 }$
D) $- \frac { 17 } { 156 }$

Question

Quizplus · Accepted Answer

To evaluate $r(-8)$, substitute $x = -8$ into the rational function: $r(-8) = \frac{17}{(-8)^2 - 9(-8) + 20} = \frac{17}{64 + 72 + 20} = \frac{17}{156}$.

Evaluate the Rational Function r(x)=17x2−9x+20,r(−8)r ( x ) = \frac { 17 } { x ^ { 2 } - 9 x + 20 } , r ( - 8 )r(x)=x2−9x+2017​,r(−8)

Evaluate the Rational Function $r ( x ) = \frac { 17 } { x ^ { 2 } - 9 x + 20 } , r ( - 8 )$