Step-by-step explanation:
Here, we'll need to multiply these two values together. I'll use the expansion formula, which goes as follows:


Lets apply this to the following equation:



- Remove parenthesis and add.

Answer:
x^2+10x+21
Answer:
your picture doesnt show all the answers but it doesnt matter well just count it
surface area = (length x width) + (width x height) + (height x length) and the answer we times it by 2 (cuz they are 6 sides in a prism)
so 4 x 5 + 5 x 10 + 10 x 4 = 110
110 x 2 = 220in²
Answer:
The maximum amount of profit is 32
Step-by-step explanation:
Given

Required
Determine the maximum profit
This is calculated by calculating the maximum of the function.
A quadratic function is of the form

and its maximum is:

So: 
We have that







<em>Hence, the maximum amount of profit is 32</em>