Rate of change: tables

Question

A vendor who sold bread at farmers' markets counted the number of leftover loaves at the end of each day.

Loaves of leftover bread
Day	Leftover loaves
Monday	43
Tuesday	56
Wednesday	22
Thursday	34
Friday	61

According to the table, what was the rate of change between Tuesday and Thursday?

loaves per day

Answer 1

Rate of change = (Leftover loaves on Thursday - Leftover loaves on Tuesday) / (2 days)

between Tues. & Thurs.

The units are leftover loaves per day. The Rate will be negative.