-3pa - 9b - 18pc
For starters, you know that you can't take away any of the letters from the equation because none of the three have the exact same letter; however, they all have something they can be divided by and that is -3.
It would be -3 instead of just 3 because the equation itself starts with a negative. (you could probably do it anyways with just 3, but you'd end up taking out a negative one, anyways, so what's the point?)
Now, you would have: -3 ( pa + 3b + 6pc )
That is truly all you can take out. So, that would end up being your answer since all you can really do is simplify.
First question:
Your total restaurant bill is the items you have purchased
plus the sales tax and plus the tip (if there’s any). Sales tax is added to
your purchase because this is tax imposed to the consumer and not to the buyer.
The buyer is only required to collect this tax from the buyer.
Second question:
A check is a financial instrument wherein the bank is
required to pay when presented or encashed to them. You just have to make sure
that you have account balance to that certain bank.
Third question:
The way of payment not any more common in the most modern
economies is the bartering. Both credit cards and cash are the most common way
of paying for your purchases.
Answer:
B. 
Step-by-step explanation:
we know that
If a ordered pair is a solution of a linear equation. then the ordered pair must satisfy the linear equation
In this problem we have

<u>verify each case</u>
case A) 
substitute the value of x and the value of y in the linear equation and then compare

-----> is not true
therefore
The ordered pair case A) is not a solution
case B) 
substitute the value of x and the value of y in the linear equation and then compare

-----> is true
therefore
The ordered pair case B) is a solution
case C) 
substitute the value of x and the value of y in the linear equation and then compare

-----> is not true
therefore
The ordered pair case C) is not a solution
case D) 
substitute the value of x and the value of y in the linear equation and then compare

-----> is not true
therefore
The ordered pair case D) is not a solution
Answer: n = 6
Step-by-step explanation:
The red dot(n) is on 6 so n =6