Yuri purchased 8 trees to have planted at his house the story charged a delivery fee of $5 per tree the title cost of the trees including the delivery was $168 how much did each tree cost

To get this, lets begin by looking at the known.

In total, it costed $168. Since it costs $5 per tree, lets times:

5x8= 40

Now that we know that delivery fees were $40, lets subtracted that from the total.

168-40=128

That means our total now without delivery fees is $128.

Since we know that Yuri bought 8 trees, we can divide by that.

128/8=16.
Meaning each tree costs $16