The Function Given Below Gives the Cost to Manufacture $\chi$ Items Estimate (Using

Multiple Choice

The function given below gives the cost to manufacture $\chi$ items. Estimate (using $h = 0.0001$ ) the instantaneous rate of change of the cost at the production level $x = 1,000$ . $C ( x ) = 10,400 + 4 x - \frac { x ^ { 2 } } { 12,000 }$
Select your answer rounded to the nearest tenth.

A) 3.8
B) 5.0
C) 4.0
D) 2.8
E) 4.8