Answer:
D. 4.5 kg
Step-by-step explanation:
Option D is correct. The correct option for the recursive formula is 
Given the sequence 10, 14, 18...
The first term is 10, hence
a1 = 10
The previous terms will be 
From the sequence, we can see that <em>4 is being added to the previous term to get the next term</em>. Hence the nth term will be expressed as:

Get the term before the first term 
If n = 1

Hence the correct option for the recursive formula is 
Learn more here: brainly.com/question/18233843
Answer:
Step-by-step explanation:
x = 6 hope this helps
Answer:
If they are equivalent, both the sides will be equal.
Step-by-step explanation:
As given,
Step 1: Pick any three-digit counting number
Lets pick the number 643
Step 2: Reverse the digits of the original number.
So, reverse becomes 346
Now, it says that the difference of these two numbers has a tens digit of 9.
Lets, check:

So, its true that the difference has a tens digit of 9.
Another example:
Lets take 449
So reverse is = 944
Difference = 
Here also the tens digit is 9.
So, the condition applies to all 3 digit numbers.