Evaluate the Sum Using the Given Information $x _ { 1 } = - 4 , x _ { 2 } = 0 , x _ { 3 } = 2 , x _ { 4 } = 5$

Evaluate the sum using the given information.
- $x _ { 1 } = - 4 , x _ { 2 } = 0 , x _ { 3 } = 2 , x _ { 4 } = 5$ , and $\Delta x = - 0.9 ; f ( x ) = 3 x ^ { 2 } - x$
$\sum _ { \mathrm { i } = 1 } ^ { 4 } \mathrm { f } \left( \mathrm { x } _ { \mathrm { i } } \right) \Delta \mathrm { x }$

A) $- 475.2$
B) $- 117.8$
C) $- 118.8$
D) $- 20.7828$

Correct Answer:

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