exam Maths Puzzle Numerical Ability

I need to know the radius and center for this equation. It is for circles.
x^2-6x+y^2=226/25.

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exam Other Question

I am having problems solving for y
4x=12+3y
seems basic but it looks like jiberish to me... please help me break it down and understand it!!!!
A high school football player has a rushing yards of 4045 yards for the season with 12 games. What is his average yards per game?