Question

Jackie kept a tally of the number of emails she received each day for a week.
Emails Jackie received
Day Emails
Sunday 6
Monday 10
Tuesday 10
Wednesday 5
Thursday 2
According to the table, what was the rate of change between Sunday and Wednesday?
Round your answer to the nearest tenth.
emails per day

Answer 1

To find the rate of change of emails received between Sunday and Wednesday, we can use the formula for rate of change:

\[
\text{Rate of Change} = \frac{\text{Change in Emails}}{\text{Change in Days}}
\]

First, we identify the number of emails received on Sunday and Wednesday:

- Emails on Sunday: 6
- Emails on Wednesday: 5

Next, we calculate the change in emails:

\[
\text{Change in Emails} = \text{Emails on Wednesday} - \text{Emails on Sunday} = 5 - 6 = -1
\]

Then, we find the change in days between Sunday and Wednesday. There are 3 days between Sunday and Wednesday (Monday, Tuesday, and Wednesday).

\[
\text{Change in Days} = 3
\]

Now, we can calculate the rate of change:

\[
\text{Rate of Change} = \frac{-1}{3} \approx -0.3333
\]

Rounding to the nearest tenth, the rate of change is:

\[
\text{Rate of Change} \approx -0.3 \text{ emails per day}
\]

Thus, the rate of change between Sunday and Wednesday is approximately **-0.3 emails per day**.