Answer:
<h2>
x = −7 and x = 33</h2>
Step-by-step explanation:

The coordinates that you record is an example of data from the graph I think
No, she cannot use a ratio of 21 to 6. You can figure this out in a few different ways. First you can simplify down the fraction 18/3, to get 6/1. 6/1 does not equal 21/6, because 21/6 equals 7/2. However, 6/1 it does equal 36/6. You could also noticed that three doubles to make six, yet 18 does not double to make 21
Third option from the. Top to the bottom
The order of the persons seated in front is not important so long as there are four of them. The combination of the given problem is expressed as,
6C4
The numerical value of the combination is 15. Thus, the answer to this item is letter D.