<u>Answer-</u>
<em>For </em><em>side length of 3.56 cm</em><em> and </em><em>height of 7.10 cm</em><em> the cost will be minimum.</em>
<u>Solution-</u>
Let us assume that,
x represents the length of the sides of the square base,
y represent the height.
Given the volume of the box is 90 cm³, so

As the top and bottom cost $0.60 per cm² and the sides cost $0.30 per cm². Total cost C will be,

Then,

As C'' has all positive terms so, for every positive value of x (as length can't be negative), C'' is positive.
So, for minima C' = 0

Then,



Therefore, for side length of 3.56 cm and height of 7.10 cm the cost will be minimum.
Answer:
-1
Step-by-step explanation:
No sorry:( hope someone helps
Answer:
Need more?
Step-by-step explanation:
-x^2 + 3x + 2
Is this the answer?
Answer:
I'm not so sure but i guess it's option D y=5x-3
the question said that the number of box of nails are purchased depending on how many houses they planned to build. so for knowing the boxes of nails they need to purchase they need to subtract the boxes which were left and the boxes we need now