X-124=9(2x+3)-15 ???​

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Which number line correctly shows 0.8 + 0.3?