**Answer:**

The problems associated with choosing appropriate sampling units and frame are given below;

**Step-by-step explanation:**

1. The only aid available to the forester or researcher is **a map of the farm.**

2. Appropriate sampling units will be hard to choose because farm trees are only characterized by attributes such as

- type of crop/plant (as all trees of a certain crop are much likely to have similar width or diameter)

- height of tree (as height is closely related to width)

- location of tree on the farm (e.g. North on the map, East on the map, South on the map, West on the map)

- age of tree (as older trees are more likely to have diameters exceeding 12 inches, than the younger trees)

- etcetera.

3. Appropriate frame (size) of sample will be hard to choose because a number of trees cannot just be selected from the total number of trees, if the categorization for sampling units is uncertain.

I'm not sure what you mean by "the 3 consecutive numbers of 72".

Do you mean 3 consecutive numbers that ADD UP TO 72 ?

If that's what you want, then you can use this equation:

The middle number . . . . . x

The smallest number . . . . (x-1)

The biggest number . . . . . (x+1)

The equation: ** (x-1) + (x) + (x+1) = 72 .**

Boil that equation down, and you discover that x=24 .

So the 3 numbers are 23, 24, and 25 .

___________________________________

If that's not what your question means, then this answer

isn't what you need, and you should completely ignore it.

**Answer:**

x = -4

**Step-by-step explanation:**

38 miles south. If you’d like an explanation, you can ask :)