Question

To determine how many staff members she needed, a local coffee shop owner recorded the number of customers that entered the shop each day.
Coffee shop customers
Day Customers
Tuesday 444
Wednesday 423
Thursday 427
Friday 440
Saturday 434
According to the table, what was the rate of change between Tuesday and Friday?
Round your answer to the nearest tenth.
customers per day

Answer 1

To find the rate of change in the number of customers between Tuesday and Friday, we need to calculate the difference in the number of customers on those days and then divide by the number of days between them.

The number of customers on:

- Tuesday: 444
- Friday: 440

Now we calculate the difference:

\[
\text{Difference} = \text{Customers on Tuesday} - \text{Customers on Friday} = 444 - 440 = 4
\]

Next, we find the number of days between Tuesday and Friday. The days are:

- Tuesday to Wednesday (1 day)
- Wednesday to Thursday (1 day)
- Thursday to Friday (1 day)

This gives us a total of 3 days.

Now we can calculate the rate of change:

\[
\text{Rate of change} = \frac{\text{Difference}}{\text{Number of days}} = \frac{4}{3} \approx 1.3333
\]

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

\[
\text{Rate of change} \approx 1.3 \text{ customers per day}
\]

Thus, the rate of change between Tuesday and Friday is **1.3 customers per day**.