Respuesta :
A. Let us assume the width of the pool = x
Then
Length of the pool = 3x + 3
Depth of the pool = 2(3x + 3) - 7
              = 6x + 6 - 7
              = 6x - 1
B. Area of the land space = Width * length
                     = x * (3x + 3)
                     = 3x^2 + 3x
C. Volume of the pool = (6x - 1) * (3x^2 + 3x)
                  = 18x^3 + 18x^2 - 3x^2 - 3x
                   =  18x^3 + 15x^2 - 3x
 D. The highest degree is actually 3 and the number of terms that we get is also 3.        Â
Then
Length of the pool = 3x + 3
Depth of the pool = 2(3x + 3) - 7
              = 6x + 6 - 7
              = 6x - 1
B. Area of the land space = Width * length
                     = x * (3x + 3)
                     = 3x^2 + 3x
C. Volume of the pool = (6x - 1) * (3x^2 + 3x)
                  = 18x^3 + 18x^2 - 3x^2 - 3x
                   =  18x^3 + 15x^2 - 3x
 D. The highest degree is actually 3 and the number of terms that we get is also 3.        Â