What is half x 3a or 1/2 x 3a

Which of the following circles have their centers in the third quadrant? check all that apply.

Meg constructed triangle poq and then used a compass and straightedge to accurately construct line segment os, as shown in the figure below, which could be the measures of angles pos and angle poq?

In a timed typing test lara typed 63 words per minute. estimate the number of words she should be able to type in half in hour show your work