Answer:

Step-by-step explanation:
In order to find the circumference of a circle, we can use the formula for it, which is
.
This formula states that r, the radius, multiplied by pi (3.14..) doubled will be the circumference.
Pi rounds to 3.14 usually.
So our new formula is:

We can now multiply.

Hope this helped!
To find the slope of the expression:

We need to remember that this is the Slope-intercept Form of the line equation:

Where
m = slope
b is the y-intercept.
Therefore, the slope of the line equation above is m = 3.
The <em><u>correct answer</u></em> is:

Explanation:
An exponential function is of the form
, where a is the initial population, b is 1 plus the amount of yearly change, and x is the number of years.
For our problem, a, the initial population, is 1500.
The yearly change is 6.3%; 6.3% = 6.3/100 = 0.063. Since it is decreasing, this is negative; 1+(-0.063) = 0.937.
We use t as the number of years.
This gives us

Answer:
So the answer is -7
Step-by-step explanation:
2z + 8 = −6
2z + 8 -8 = -6 -8 ( add - 8 for both sides)
2z = -14
2z/2 = -14/2 (divide both sides by 2)
z = - 7
So the answer is -7