Mathematics, 07.10.2021 21:10 maxpaz782

I need this please (a) The population of a certain city decreased by 4000 people. Write a signed number to represent this population change.
and also b

I need this pleaseeeee

(a) The population of a certain city decreased by 4000 people. Write a

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I need this please (a) The population of a certain city decreased by 4000 people. Write a signed n...