6b<42
b<7
4b+12>8
4b>-4
b>-1
b>-1 or b<7
we have

Step 1
Eliminate the parenthesis

Step 2
Group terms that contain the same variable

Step 3
Combine like terms

therefore
the answer is

It is 39..................................
Answer: 35 m
Step-by-step explanation:
The problem is the same as:
a man is fix (not moving) and the goods train is travelling at the speed of 54+72 = 126 (km/h)
Distance = 126 km/h* 8 s=126000 m/(3600 s) * 8 s=35 m
9 ÷ 2 = 4.5
On the second day it snowed 4.5 inches.
HOPE THIS HELPED
:)