Which of these shows 9 + 4p rewritten using the commutative property of addition?

4p + 9

9p + 4

9 − 4p

4p − 9

Option (1)

Step-by-step explanation:

Commutative property of addition states that while adding two real  numbers m and n, the order of adding doesn't matter, i.e. we can add, m and n as as well as .

So, we can conclude that the commutative property of addition states that there will be no impact of ordering the terms.

Now, we have

So, by the commutative property of addition we can say that is same as .

Hence, the expression shown in option (1) is correct.

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents