The answer is $1.10 because if you divide and multiply by the other answers this answer is the only one that makes sense
<span>y + 4 ≤ 0
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Subtract 4 from each side
</span><span>y + 4 - 4 ≤ 0 - 4
</span>y ≤ -4
y ≤ -4 is the answer
The commutatice property for addition says a+b=b+a
If it was for subtraction, then it would be a-b=b-a
Take a=7 and b=5
7-5 is not equal to 5-7
2 is not equal to -2
So subtraction is not commutative for whole numbers.
Hope this helps :)
I just answered this question few minutes ago
yes, you are right