Hi there!
To find the percent of change we can use the following formula:

Let's fill in our data

Subtract

Divide

And finally multiply

Hence, the percent of change is negative 20%.
~ Hope this helps you!
Circumference of circle = π x d
diameter = 3x2= 6m
3.14 x 6 = 18.84m (circumference)
Area of a circle = π x r x r
=3.14 x 3 x 3
=28.26m2 (area)
<u>Answer:</u>

gradient = = 
y-intercept = 
<u>Step-by-step explanation:</u>
• The slope-intercept form of an equation takes the general form:
,
where:
m = slope,
c = y-intercept.
• We are given the equation:

To change this into the slope-intercept form, we must make y the subject:
[subtract
from both sides]
⇒
[divide both sides by 3]
⇒ 
• Comparing this equation with the general form equation, we see that:
m = 
c =
.
This means that the gradient is
, and the y-intercept is
.
The answer to your question is 480
C. 9^4
when dividing with exponents, i usually just look at the exponents and subract them so i did 12-8 for this problem