The radius is the distance from the center to any point. The distance from (2,1) to (0,1) is of course 2. The general formula for a circle with radius r and center (a,b) is
In our case we get
In our case we get
Katelyn is keeping track of how much money she has. On Monday, she has $50. On Tuesday, she earns $25 from babysitting. On Wedne
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