Found this tricky, could someone help me :)

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

A50% increase followed by 33 1/2% decrease