Answer: OPTION B
Step-by-step explanation:
To solve this problem you must add the areas of each rectangle that form the prism;
The area of a rectangle can be calculated with the formula:

There are three pairs of equal rectangles, then you can find the surface area of 3 rectangles and multiply each one by 2, then you obtain that the surface area of the prism is:

Answer:
ANSWER IS BELOW
Step-by-step explanation:
Find the properties of the given parabola.
Tap for more steps...
Direction: Opens Up
Vertex:
(
0
,
0
)
(0,0)
Focus:
(
0
,
3
4
)
(0,34)
Axis of Symmetry:
x
=
0
x=0
Directrix:
y
=
−
3
4
y=-34
Select a few
x
x
values, and plug them into the equation to find the corresponding
y
y
values. The
x
x
values should be selected around the vertex.
Tap for more steps...
x
y
−
2
4
3
−
1
1
3
0
0
1
1
3
3
3
xy-243-1130011333
Graph the parabola using its properties and the selected points.
Direction: Opens Up
Vertex:
(
0
,
0
)
(0,0)
Focus:
(
0
,
3
4
)
(0,34)
Axis of Symmetry:
x
=
0
x=0
Directrix:
y
=
−
3
4
y=-34
x
y
−
2
4
3
−
1
1
3
0
0
1
1
3
3
3
xy-243-1130011333
Answer:
419.25
Step-by-step explanation:
The calculation of the cost of materials for the cheapest such container is shown below:-
We assume
Width = x
Length = 2x
Height = h
where, length = 
Base area = lb
= 
Side area = 2lh + 2bh
= 2(2x)h + 2(x)h
= 4xh + 2xh
Volume = 24 which is lbh = 24

Now, cost is

now we have to minimize C(x)
So, we need to compute the C'(x)

C"(x) 
now for the critical points, we will solve the equation C'(x) = 0


So, x is a point of minima that is
= 
Now, Base material cost is

= 139.75
Side material cost is

= 279.50
and finally
Total cost is
= 139.75 + 279.50
= 419.25
Answer:
i think that answer is -21y^8