Explain why 3x – y is the same as -y + 3.1. What property justifies those expressions that explains why

The commutative property

Step-by-step explanation:

The commutative property of addition states that a+b=b+a ( i.e you can move things around without changing the sum)

example:

3x-y=3x+(-y)=(-y)+3=-y+3x

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.