Question

Norma spent a week at the beach and recorded the number of shells she found each day.
Shells Norma found
Day Number of shells
Tuesday 5
Wednesday 1
Thursday 0
Friday 0
Saturday 5
According to the table, what was the rate of change between Tuesday and Thursday?
shells per day

Answer 1

Change = 0 − 5 = −5 shells over 2 days, so the rate = −5/2 = −2.5 shells per day.