Answer:
(a) 
Step-by-step explanation:
The question is incomplete. (See comment for complete question).
From the completed question, we have:

--- number of pyramids
Required
An expression for the area of the base
The total base length of the pyramid represents the perimeter of the base.
And since the base is a square, then the following relationship exist.

Where L represents the length of each side.
This gives

Make L the subject

The area of the base is then calculated as:


<h3><u>Out of the four options, the letter B is a function.</u></h3>
A function cannot have an x value with two different listed y terms.
B is the only option that does not repeat x terms.
Answer:
it says round to the nearest 10th so it wouldn't be 81, it would be 81.8%
Answer:
2,025
Step-by-step explanation:
5 squared is 5x5 = 25
9 squared is 9x9 = 81
25x81 = 2,025
Answer: -116
Step-by-step explanation: Since negative numbers are involved, the best way to solve this is add 95 and POSITIVE 21. This gives you 116. Since you move from a positive to a negative, the 116 needs to be negative