If you want an online presentation, I think you mean by a website.
Best thing you can find is Google Slides.
if you want a program,
LibreOffice is your best bet. It is completely free and it is for Linux, Windows and possibly Mac.
A) facts.
Facts is the only thing that can be considered REAL data.
Answer:
Reference
Explanation:
Variables provide reference to the stored data value.
For example:
int i = 0;
Here i is a variable of type int with an initial value of 0. i is a reference to this stored value 0. Now if I want to update the data, I can do so using this reference.
i = 1;
Now the reference is used to manipulate the stored data and change it to 1. In a similar manner all updates to the value can be done using the variable reference.
Answer:
The Big-O notation of the algorithm is O(n)
Explanation:
The declaration and update of the integer variable sum is a constant of O(1). The for loop statement, however, would repeat relative to the size of "n", increasing the counter variable and updating the sum total by the counter.