Every square is always rectangle because it is a quadrilateral with all four angles, right angles
We have that
y=-3x²<span>+5x+11
we know that
the equation of the parabola in standard form can be expressed in one of the following two ways
y=ax</span>²+bx+c
<span>the parabola opens up if a is positive and opens down if a is negative
and
x=ay</span>²+by+c
the parabola opens right if a is positive and opens left if a is negative
<span>
in this problem
the equation is of the form
</span>y=ax²+bx+c<span>
a=-3
so
the parabola opens down
using a graph tool
see the attached figure
the vertex of a parabola is a maximum
the answer is</span>
the parabola opens down
1.) Gather all the sides (length, width, and height)
V=l×w×h
2.)Plug in the correct and appropriate volume:
V=8×6×

3.)Multiply all of them:
V=8×6×

=48×

=

=16 (after simplifying)
4.) State the answer in a sentence:<span>
The volume of the rectangular prism is 16 </span>

.
Hope this helps!