Final answer:
$5 per foot
Step-by-step explanation:
To find out how much a foot is it for the tree, we need to divide the total cost of the tree by its height in feet.
Given that the tree is 6 feet tall and sold for $30, we can calculate the price per foot by dividing $30 by 6:
Price per foot = $30 / 6 feet = $5 per foot