Can i get some help pls?

The last one.

Step-by-step explanation:

The last one:

a + b = b + a

5+3=3+5

Step-by-step explanation:

The answer is 5+3=3+5 because if u switch the order of the addition u will get the same answer

5+3=8

3+5=8

answer: she must produce at least 9,000 windows in order to make a profit of $48,000

explanation:

48,000 - 12,000 = 36,000

36,000/4 = 9,000

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540