Answer:
it's D
Step-by-step explanation:
X < 31.5
answer is the middle symbol
start at 31.5 (right in the middle between 31 and 32) move open arrow to the left
First, let's simplify the inequality

The graph looks like this:
Notice that the white dot is placed above the -6, it is important to include it like that.
Now, as an interval:
I'm not quite sure what this question means, but d = rt is a formula used to calculate the distance. the variables here are d for distance, r for rate, and t for time. if you need to solve it for t:
d = rt ... divide both sides by the rate (r)
(d/r) = t ... is your result