What is (15+12)-9 for my work on school not really sure but I thought you would know how to answer it for me I'm getting very frustrated and I need help there is that better

What is the volume of this square pyramid?

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

Which of the following circles have their centers in the third quadrant?