End behavior of polynomials i give 20 points

The end behavior of a polynomial is determined entirely by the leading term. For example, behaves the same way as when is very large in magnitude. All the problems in the picture are more or less the same. I'll pick out two examples:

1a) behaves like . will be positive regardless of the value of , so to either the left or right, the graph of will approach positive infinity or "rise" on both the left and right sides.

1c) has a leading term of , so behaves like . When , we have , so that . This means rises to the left. If , then , so falls to the right.

There are 4 rolls she should buy.

Step-by-step explanation:

Since we have given that

Length of wall = 9 feet

Width of wall = 11 feet

Height of wall = 8 feet

As we know the formula for "Area of four walls ":

Area of each single roll covers = 72 square feet

So, Number of single rolls of wallpaper is given by

Hence, there are 4 rolls she should buy.