Ineed to solve this for r:
r *squared* - 8r - 9 = 0

Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2

With number 11 ( show how you got the answer)

Ineed on this question me get the answer