Please explain your answer so I understand it and just don't get it right for the sake of getting it right. Thanks!

none

Step-by-step explanation:

The first step you have to do is add 15 to both sides

so 12b > 36

next, you want to find out what b is so divide both sides by 12

b>3

As you represent this, you first want to find a line that is greater then three

this would be a because it is the only option that is greater then 3

However, because the dot is closed it can't be A so none of those options are correct

Tips:

if you are having trouble figuring out which lines are which remember that if the variable is on the left side of the equation to look at the sign. if you look at the sign then you see that the way the sign is going is also the way the arrow at the end of the line is going, but this trick only works if the variable is on the left side.

closed circle=≤, ≥

open circle= < , >

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

hope this !