Answer:
424--------------------------------------------------------
Your're lucky am going to help. Kidding. :D
All real numbers but 3 and -3
Answer:
r equals StartFraction C Over 2 pi EndFraction
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
r is the radius of the circle
Solve for r
That means -----> isolate the variable r
Divide by 2π both sides

Simplify right side

Rewrite

so
r equals StartFraction C Over 2 pi EndFraction
Answer:
Dude, where's the picture?
A=3
The equation y=3x goes through both points
Hope I helped