IXL | Rate of change: tables

Mrs. Watson told students how many rounds to expect in the spelling bee based on previous years.

Rounds in the spelling bee
Year	Rounds
2014	5
2015	11
2016	8
2017	12
2018	13

According to the table, what was the rate of change between 2017 and 2018?

rounds per year

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question

In hopes of raising more funds for arts education, some parents in the Arlington School District publicized the current per-student arts education budget.

Arlington arts education budget
Year	Per-student budget
2017	$ 22
2018	$ 35
2019	$ 25
2020	$ 32
2021	$ 39

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

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

–

2,021

–

2,020

–

year

per

year

The rate of change between 2020 and 2021 was

per

year

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Work it out

Not feeling ready yet? These can help:

D.8Add, subtract, multiply, or divide two decimals

B.24Add, subtract, multiply, and divide integers

L.5Unit rates

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