The answer to number one is C
Lets work it out.
A(6) = 6 + (6-1)(-2)
6 + 5(-2)
6-10
-4
-4 would be your answer, unless it is A(n) = 6 + A(n-1)(-2)
Answer:
4
Step-by-step explanation:

The price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.
<h3>What is the percentage?</h3>
It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.
Let x is the price of the book
And y is the price of the notebook,
Then,
y = x- 0.20x = 0.80x
x = (1/0.80)y
x = 1.25y
So x is 1.25 or 125% higher than the, y
Thus, the price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.
Learn more about the percentage here:
brainly.com/question/8011401
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