Mr. chang paid the least because 10% off 25 is more than 20%off 30
Step-by-step explanation:
seven less than three times this number = 7 - 3x
7 - 3x divided by 5 times the square of number =

<em>hope </em><em>this</em><em> answer</em><em> helps</em><em> you</em><em> dear</em><em>.</em><em>.</em><em>.</em><em>and </em><em>may </em><em>u</em><em> have</em><em> a</em><em> great</em><em> day</em><em> ahead</em><em>!</em>
Answer:
No, they are not.
Step-by-step explanation:
The easiest way to find a function on a graph is by finding if any points share the same x value. All of these do, so none are functions.