A quantity decreases from amount a to amount b. a. Find the change in the quantity. i.

Question:

A quantity decreases from amount a to amount b.
a. Find the change in the quantity.
i. a = 8, b = 2
ii. a = 9, b = 3
iii. a = 5, b = 1
b. By referring to your work in part (a), explain why it makes sense that if a quantity decreased, then the change will be negative.