Three and forty-two hundredths
Area = length * width
length = (2 * width) - 1

Since length cannot be negative, w = -2 is not a solution. Thus,

is your width.
Since length = 2 * width - 1, plug in width:
Find the domain by finding where the equation is defined. The range is the set of values that correspond with the domain...(I'm including the range..)
Domain:(-∞,∞),{x║x ∈ R}
Range:(-8,∞),{y║y≥-8}
a. factor A = x^2 -30x + 225 = (x - 15)(x - 15)
side length =<u> (x - 15)</u>
b. add (x - 15) four times = 4(x - 15) =<u> 4x - 60</u>