4 units
3 units and 4 tenths is 3.4 units.
7
24 cubes 1x1x1
3 units
It is 4 units.
In cartesian coordinates (x, y) = (3, -4)
5.
The vector sum of (7 units down) + (3 units up) is (4 units down).
The distance between the points of (4, 3) and (0, 3) is 4 units
4 units
3.5 units, or 3 units (to be pedantic).