What is (b) called ?

Empty box + box + empty box fill in the box is equal to 30 how

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?