Please complete it (picture)

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?