9-(3/3) to the second power

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

Graph the equation. select integers for x

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c