Answer:
C. 
A. First Picture
Step-by-step explanation:
We are given the inequality,
.
On simplifying the inequality, we get,

i.e. 
i.e. 
i.e. 
So, we get the correct representations of the inequality are,
C. 
A. the First Picture
Plugging in the values, we get 7(6)-4=42-4=38.
Answer:
C
Step-by-step explanation:
The slope is -12 and the y intercept is 3. -12 is negative and 3 is positive.
Answer:
Option 4: 12.7
Step-by-step explanation:
You can look at the diagram as two 45º45º90º triangles.
By the properties of a 45º45º90º triangle:
OW=WL=a
OL=a√2
a√2 = 18
a=18/√2a≈12.728