Use the Demand Function $x = 250 \left( 1 - \frac { 5 p } { 7 p + 2 } \right)$

Multiple Choice

Use the demand function $x = 250 \left( 1 - \frac { 5 p } { 7 p + 2 } \right)$ to find the rate of change in the demand x for the given price $p = \$ 2.00$ . Round your answer to two decimal places.

A) 9.77 units per dollar
B) -1.95 units per dollar
C) 1.95 units per dollar
D) 3.47 units per dollar
E) -9.77 units per dollar