b. Add a fourth row to the table showing the population information for the town of Concord. Concord’s population as of the last census was p people; for its percentage change, choose a negative integer not divisible by two. Write two expressions showing the current estimated population of Concord in terms of p.

Answer 1

To find the current estimated population of Concord, we need to use the percentage change from the last census. Let's say Concord's population as of the last census was p people, and the chosen percentage change is -x% (where x is a negative integer not divisible by two).

Expression 1: The current estimated population of Concord can be calculated by subtracting the percentage change from the population at the last census: p - (x/100)p = p(1 - x/100)

Expression 2: Alternatively, we can express the percentage change as a decimal by dividing x by 100: -x/100. Then, we can multiply the population at the last census by this decimal to find the population decrease: p * (-x/100). The current estimated population is obtained by subtracting this decrease from the population at the last census: p - p * (-x/100) = p(1 + x/100)

Both expressions 1 and 2 can be used to determine the estimated population of Concord in terms of p.