Which of the following shows the Identity Property for Addition?

A. 9 + (-9)=0
B. 9 + 0 = 9
C. 9 = 9
D. 9 x 1 = 9

Aportion of a line bounded by two points is defined as

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)