Salesperson a made more commission and made a total of $74958
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 think the answer would be $9.46 left as a tip for the waiter.
You are correct. The answer is D 5:3