Answer:
all work is shown and pictured
72⁰_______3π m
360⁰______15π m
C = 15π = 2π r
r = 7•5 m
Given:

First, let us find two points from this equation.
We can set values of x and then solve for y.
Let us find the values of y when x = 1, 2, 3, 4, 5

We now have a set of points:
(1, 21)
(2, 16)
(3, 11)
(4, 6)
(5, 1)
Since the given plane is limited to values of 10 and -10, the points that we can plot are the points (4, 6) and (5, 1)
The graph would then look like this:
Your answer is (a) because 4 times 2 is 8 but since it's negative 2 it's negative 8
Answer:
Number 7: 40%
Number 8: 75%
Step-by-step explanation: Hope i helped mate