Answer:
Growth
Step-by-step explanation:
Given

Required
Growth or decay
The general form is:

Such that:

For b, we have the following conditions:
----- Growth
--- Decay
---- None
Compare
to 

<em>Because 2.5 > 1, then the first condition applies (growth)</em>
Answer:
D.
The length of the granite must be less than 120 inches.
Step-by-step explanation:
Let x inches be the widht of the section. If the length is 3 times the width, then the length is 3x inches.
The perimeter of the rectangle is

Hence,

The perimeter of the section must be less than 320 inches, so

Step-by-step explanation:
We notice that when x increases by 3, y decreases by 2.
Hence the slope of the line
= Rise of y / Run of x
= (-2) / (3)
= -2/3.