in a small town, 10 residents move to new cities each year for 3 years. the equation below is written to…

in a small town, 10 residents move to new cities each year for 3 years. the equation below is written to represent the situation: (-10)·3 = -30 which description best explains the meaning of -30 in the equation? a -30 residents leave the town. b there are -30 residents in the town. c the change in the number of residents per year is -30. d the total change in the number of residents in the town due to people moving away is -30.

in a small town, 10 residents move to new cities each year for 3 years. the equation below is written to represent the situation: (-10)·3 = -30 which description best explains the meaning of -30 in the equation? a -30 residents leave the town. b there are -30 residents in the town. c the change in the number of residents per year is -30. d the total change in the number of residents in the town due to people moving away is -30.

Answer

the 3 - year period.

  • Option A: Saying “$-30$ residents leave” is an incorrect way of phrasing. We are talking about a total change.
  • Option B: There can't be a negative number of residents in a real - world town context.
  • Option C: The change per year is $-10$, not $-30$.
  • Option D: Since $(-10)\times3$ calculates the total change in the number of residents (because of people moving away) over 3 years, and $(-10)\times3=-30$, this option is correct.