IXL | Rate of change: tables

At Arcadia Consulting, the head of human resources examined how the number of employees with health care benefits varied in response to policy changes.

Employees with health care benefits
Year	Employees
2018	12
2019	7
2020	13
2021	22
2022	50

According to the table, what was the rate of change between 2021 and 2022?

employees per year

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question

The financial aid office at Pena University produced an internal report on the number of students receiving scholarships.

Students receiving scholarships
Year	Students
2018	20
2019	22
2020	16
2021	19
2022	21

According to the table, what was the rate of change between 2020 and 2021?

students per year

key idea

Rate of change

change in value

change in time

solution

Plug the numbers into the formula for rate of change and simplify.

Rate of change

change in value

change in time

students

–

students

2,021

–

2,020

students

–

students

year

students

year

students per year

The rate of change between 2020 and 2021 was

students per year

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