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

Question:

A quantity increases from amount a to amount b.
a. Find the change in the quantity.
i. a = 3, b = 5
ii. a = 1, b = 9
iii. a = 2, b = 7
b. By referring to your work in part (a), explain why it makes sense that if a quantity increased, then the change will be positive.