If (2,-6) is rotated 90 degrees clockwise what would be the coordinates

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During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

What is the solution set of the quadratic inequality x^2-5< or equal to 0