Answer:

Step-by-step explanation:
From the question we are told that:
Diameter 
Radius
Generally the equation for Circumference of a circle is mathematically given by


We assume the annual percentage increase is the same. We will work out the constant k using the formula
We have
P = 76
A = 72
t = 6 years (from 1992 to 1998)
Substitute into the formula


Take log both sides give



We can now work out the number of population by the end of 2012 using the formula
We have
A = 72 million
k = 0.009
t = 10 years (1992 to 2012)


≈79 million
Answer:
-
→ Equation 2 (
)
-
→ Equation 3 (
)
-
→ Equation 1 (
)
Step-by-step explanation:
The equation of the line in Slope-Intercept form is:

Where "m" is the slope of the line and "b" is the y-intercept.
Knowing this, and having the equations provided in the exercise, you can identify the slope and the y-intercept of each line.
- In Equation 1:

- In Equation 2:

- In Equation 3:
