If today is October 9th and we observe a full moon, how many more weeks will it be before we observe the next first quarter?

Question

If today is October 24th and we observe a waning crescent, on what approximate date did we observe the last waxing crescent?
The moon rotates on its axis at the same rate that is orbits the Earth. This causes us to see which of the following?
How long does a lunar cycle take to complete?
How long does it take the moon to revolve around that Earth one complete time?
A decreasing amount of visible light on the moon’s surface is referred to as -
Question 12
An increasing amount of visible light on the moon’s surface is referred to as –
True or False: The same moon phase is seen by everyone on Earth each night –
people in the northern and southern hemispheres do not see opposite moon phases.
No reflected light from the Sun is visible on Earth during a –