Question

sandra kept a tally of the number of emails she received each day for a week.
emalls sandra received
day emalls
tuesday 6
wednesday 4
thursday 6
friday 6
saturday 6
according to the table, when was the rate of change greater?
between wednesday and friday
between tuesday and saturday

Explanation:

Step1: Calculate rate of change between Wednesday and Friday

The formula for rate of change is $\frac{\text{Change in emails}}{\text{Change in days}}$.
Emails on Wednesday = 4, emails on Friday = 6.
Change in emails = $6 - 4=2$.
Change in days = $2$ (from Wednesday to Friday is 2 days).
Rate of change = $\frac{2}{2}=1$.

Step2: Calculate rate of change between Tuesday and Saturday

Emails on Tuesday = 6, emails on Saturday = 6.
Change in emails = $6 - 6 = 0$.
Change in days = $4$ (from Tuesday to Saturday is 4 days).
Rate of change = $\frac{0}{4}=0$.

Answer:

between Wednesday and Friday