Three years ago, the residents of Planet X found a black hole leading to another galaxy. Since then, they have been leaving Planet X at a rate of 120 residents per year.The following equation describes this situation:−120⋅3=−360What does −360 tell us?Choose 1 answer:(A) A total of 360 residents left Planet X in the past 3 years.(B) 360 residents left Planet X each year.(C) There are 360 residents left on Planet X.
Q. Three years ago, the residents of Planet X found a black hole leading to another galaxy. Since then, they have been leaving Planet X at a rate of 120 residents per year.The following equation describes this situation:−120⋅3=−360What does −360 tell us?Choose 1 answer:(A) A total of 360 residents left Planet X in the past 3 years.(B) 360 residents left Planet X each year.(C) There are 360 residents left on Planet X.
Breakdown of Equation: The equation given is −120×3=−360. Let's break it down.−120 represents the rate at which residents are leaving Planet X per year.3 represents the number of years that have passed.Multiplying these together gives us the total number of residents that have left.
Calculation of Total Residents Leaving: Now, let's do the calculation: −120 multiplied by 3 equals −360. This means that over the course of 3 years, a total of 360 residents have left Planet X.
Verification of Total Residents Leaving: So, −360 tells us the total number of residents that left Planet X over the past 3 years.This matches with option (A) and not with (B) or (C).
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