Question

box 3:
length = $4 + x$
width = $x$
height = $x^2 + 1$
what is the base area of box 3?
$x^2 + \boldsymbol{\hspace{1cm}} x$
done
the polynomial that represents the volume of box 3 has a degree of $\boldsymbol{4}$ ✓.
complete

Explanation:

Step1: Recall base area formula

Base area = Length × Width

Step2: Substitute given values

Length = $4+x$, Width = $x$
$\text{Base Area} = (4+x) \times x$

Step3: Expand the product

$\text{Base Area} = 4x + x^2 = x^2 + 4x$

Answer:

$x^2 + 4x$