The Number P of CDs the Snappy Hardware Co $P = x ^ { 0.2 } y ^ { 0.8 }$

Multiple Choice

The number P of CDs the Snappy Hardware Co. can manufacture at its plant in one day is given by $P = x ^ { 0.2 } y ^ { 0.8 }$
Where x is the number of workers at the plant and y is the annual expenditure at the plant (in dollars) . Compute $\frac { \mathrm { d } y } { \mathrm {~d} x }$ at a production level of 24,000 CDs per day and $x = 105$ . Round your answer to two decimal places.

A) -250.64
B) -234.31
C) -222.19
D) -255.85
E) 234.31