A gardener is planting two types of trees: ● Type A: Starts at 4.5 feet tall and grows 8 inches per year. ● Type B: Starts at 2 feet tall and grows 10 inches per year.

To determine the height (in feet) of each type of tree after a certain number of years, let's denote the number of years as "t".

For Type A tree:
Height = 4.5 + 8t

For Type B tree:
Height = 2 + 10t