The simplest interpretation would go a little something like this:
We know that we want the total donation amount to be more than $7,900, so we can set up this inequality to begin with

Where
D is the total donations raised (in dollars). How do we find D? Well, we just add up the total number of table reservations sold and the total number of single tickets sold. If we let
r stand for the number of reservation tickets and
s stand for the number of single tickets, then we have

So, the inequality representing this situation would be

And that would probably be fine for this problem.
<span><em>Footnote:</em>
</span>Of course, if this were a real-life scenario, we'd need to take some additional details into account: How many tables do we have? How many people can be seated at each table?
Answer:$7.56 because 72 times 0.105 is 7.56
Step-by-step explanation:
The Answer Is 1.67 For Your Equation
Answer: None
Step-by-step explanation:
If A=4, say for example, our list becomes: 3/4, 4/5, 75%.
This in decimal form becomes: 0.75, 0.8, 0.75 which is clearly not in ascending order.
If A =5, the list becomes 3/5, 5/5, 75% which clearly is 0.6, 1, 0.75 which is also not in ascending order.
For any value of A greater than 5, the second term A/5 is greater than 1 thus being less than the third term 0.75.
Therefore there is no whole number A that makes the list true.