Question

The population of a certain city increased by 18,000 people.

Write a signed number to represent this population change.

Answer 1

`+18000`

Explanation:

Given

Increment = 18000

Required

Represent as a signed number

If the initial population is x.

The new population (y) will be:

`y = x + 18000`

It is "+" because the population of the city increases.

Hence, the signed number is
`+18000`