Notice that

is the same as

. Using a graphing utility we can graph the inqueality as shown in the picture.
We can conclude that the first graph in your picture is the graph of the inequality

.
Answer:

Step-by-step explanation:
You'll need to get this equation in slope-intercept form by solving for y. I do a little extra here to get it in the correct form, but I think it's pretty clear. Let me know if I need to clarify.

Once it's in slope-intercept form, both the slope and the y-intercept are readily available so you can easily graph it. I graphed both of them in the attached image so you can see that they are the same line.
Answer:
29
Step-by-step explanation:
multiply by 2
Answer:
See below
Step-by-step explanation:
212 mile/hr to 1 SD = 200 mile/hr
4000 sec/ hr / 200 mile/ hr = 20 sec / mile
OVER or UNDER ?
actual :
3600 / 212 = 16.98 sec / mile
so 20 sec / mile is an OVER ESTIMATE
4 feet
6.331 inches
Hope this helps!