Answer is A. 20.25
cause 20.25 x 9 = 81
√81 = 9
so 9 is the geometric mean <span>between 4 and 20.25</span>
Answer: $14.31
Step-by-step explanation:
Assuming it is the final price Natalie paid that you want:
Selling price = 0.9 * 15
= $13.50
To cater for tax it was then multiplied by 1.06:
= 13.5 * 1.06
= $14.31
That is the Community Property of Multiplication.
Hope that helps :)
The base case is the claim that

which reduces to

which is true.
Assume that the inequality holds for <em>n</em> = <em>k </em>; that

We want to show if this is true, then the equality also holds for <em>n</em> = <em>k</em> + 1 ; that

By the induction hypothesis,

Now compare this to the upper bound we seek:

because

in turn because
