Is y= x^2 + x-3 a polynomial

The letter tiles shown below are in a bag. whiteout looking i am going to draw one tile. what are my chances of drawing g?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Select the two pairs of figures that are similar.