Answer:
the top left picture is a function
Step-by-step explanation:
it is a function because the line does not go over the same x-value more then once.
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:
it's d it makes alot of sense and ik it's right
skskhfkakakan what is this haha