1)

0.25x - 1 < 0
0.7x > 1.4

Rearrange the first equation:
0.25x < 1
x < 4

Solve the second equation:
0.7x > 1.4
x > 2

So the solution is x < 4 and x > 2, or 2 < x < 4.

2)

1.2x + 3.6 >_ 0
0.8x - 4 < 0

Rearrange the first equation:
1.2x > -3.6
x > -3

Solve the second equation:
0.8x < 4
x < 5

So the solution is x > -3 and x < 5.