HURRY PLEASE!! 50 POINTS

What is the difference of the two polynomials? (9x2 + 8x) – (2x2 + 3x) 7x2 + 5x 7x2 + 11x 11x2 + 5x 11x2 + 11x

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

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.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)