The Sum of the Length L and the Width W $A ( w ) = w ^ { 2 } - 210 w$

Multiple Choice

The sum of the length l and the width w of a rectangular region is 210 meters. Write the area A as a function of w.

A) $A ( w ) = w ^ { 2 } - 210 w$
B) $A ( w ) = w ^ { 2 } + 210 w$
C) $A ( w ) = w - 210$
D) $A ( w ) = 210 - w$
E) $A ( w ) = 210 w - w ^ { 2 }$