Michael loaded 84 boxes onto a truck in 12 minutes what is the unit rate

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Can someone me and plz do the problem

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)