Length = 4 + x
Width = x
Height = x2 + 1
The polynomial that represents the volume of Box 3 has a degree of
The value is 5 tens because the 5 is in the tens place
So we have the system of equations:

equation (1)

equation (2)
To use substitution, we are going to solve for one variable in one of our equations, and then we are going to replace that value in the other equation:
Solving for

in equation (2):



equation (3)
Replacing equation (3) in equation (1):






equation (4)
Replacing equation (4) in equation (3):



We can conclude that the solution of our system of equations is <span>
(7/5, 21/10)</span>
Answer:
<h2>4(5x + 6)</h2>
Step-by-step explanation:

