The domain of y=4/x^2+1 is (−∞ , ∞)
area of a rectangle = L x W
width = y
L = y +4
so area = y(y+4) sq. ft.
Answer:

Step-by-step explanation:
From the question, we understand that:
---- First Term
---- Common difference
Required
Determine the nth term
nth term of a sequence is calculated using:

Substitute values for
and 

Open bracket

Collect Like Terms:


Hence, the nth term of the sequence is:

Answer: 31500 to 38500
Step-by-step explanation:
Lets find lower limit of guess
35000 - ( 35000 * 10% )
= 31500
Upper limit of guess
35000 + ( 35000 * 10% )
= 38500
So your guess can be anything between these two values.