Answer:
3.2 and -0.75
Step-by-step explanation:
5x - 4 > 12
add 4 to the both sides
5x > 12 + 4
5x > 16
divide both sides by 5
x > 16/5
x > 3.2
12x + 5< -4
subtract 5 from both sides
12x < -9
divide both sides by 12
x < -0.75
Find the difference between the 2 numbers which will give you the increase from the lower value to the higher. Divide this increase by the original (lower) number and multiply the result by 100 to get the percentage. For us that looks like this:

. Simplifying a bit we have

or 49%, rounded.
<span>1.5x-2.5 for x=3
</span><span>1.5 (3)-2.5
= 4.5 -2.5
= 2</span>