Question

liz kept a tally of the number of emails she received each day for a week.

according to the table, when was the rate of decrease greater?
between wednesday and saturday
between tuesday and friday

Explanation:

Step1: Calculate the rate of decrease between Tuesday and Friday

The number of emails on Tuesday is \(7\), and on Friday is \(7\). The change is \(7 - 7=0\). The rate of decrease is \(\frac{0}{7}\times100\% = 0\%\) (using the formula \(\text{Rate of decrease}=\frac{\text{Initial value}-\text{Final value}}{\text{Initial value}}\times 100\%\))

Step2: Calculate the rate of decrease between Wednesday and Saturday

The number of emails on Wednesday is \(4\), and on Saturday is \(1\). The change is \(4 - 1 = 3\). The rate of decrease is \(\frac{4-1}{4}\times100\%=\frac{3}{4}\times 100\% = 75\%\)

Answer:

between Wednesday and Saturday