Calculate the Average Rate of Change of the Given Function $[ 7,13 ]$

Multiple Choice

Calculate the average rate of change of the given function over the interval $[ 7,13 ]$ . $f ( x ) = 6 x ^ { 2 } - \frac { x } { 2 }$

A) 64.90
B) 216.33
C) 717.00
D) 35.85
E) 119.50