Combine like terms you would get 4c=48 then divide it by 4 you'll get c=12
8ft = 2yrds and 2 feet
68in= 5ft and 8in
I don't know the last one XD
I think its A please dont get mad if its wrong
Answer:

Step-by-step explanation:
So, you basically want the equation of the circle.
Given:
Center(C): 

The equation of circle is:

Where,
represents the center point and
is the radius of the circle.
Plotting the values in the equation:


This is the equation of the circle of center (5, 2) and radius 3.