Question

Mrs. Carey hosts an annual art contest for kids, and she keeps a record of the number of entries each year.
Art contest entries
Year Number of entries
2018 28
2019 25
2020 38
2021 36
2022 43
According to the table, what was the rate of change between 2019 and 2020?
entries per year

Answer 1

To calculate the rate of change in the number of entries between 2019 and 2020, we can use the formula:

\[
\text{Rate of Change} = \frac{\text{Number of entries in 2020} - \text{Number of entries in 2019}}{\text{Year 2020} - \text{Year 2019}}
\]

According to the data provided:

- Number of entries in 2019 = 25
- Number of entries in 2020 = 38

Now we can substitute these values into the formula:

\[
\text{Rate of Change} = \frac{38 - 25}{2020 - 2019} = \frac{13}{1} = 13
\]

So, the rate of change between 2019 and 2020 was **13 entries per year**.