<PRE><B>Question 789724</B>
l = 2w - 6

A.) A = lw
    A = w(2w - 6)
    A = 2w^2 - 6w

B.) P = 2L + 2w
    P = 2(2w - 6) + 2w
    P = (4w - 12) + 2w
    P = 6w -12

C.) 30 = 6w - 12
    30 + 12 = 6w - 12 + 12
    42 = 6w
    42/6 = 6w /6
    7 = w

D.) width = 7 inches
    length = 2(7) - 6 = 8 inches</PRE>