A$30 increase followed by a $30 decrease it is greater than the original value, less than the original value, or the same as the original value ?

The same as the original value.

Step-by-step explanation:

Increase = Addition

Decrease = Subtraction

If you're increasing the amount of money that you have by $30, you have $30 more than your original value. When you take the $30 away again, you are back at your original value.

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40