Answer:
x = -8
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. 
First, subtract 12 from both sides: 
3x + 12 (-12) = -12 (-12)
3x = -12 - 12
3x = -24
Next, divide 3 from both sides: 
(3x)/3 = (-24)/3
x = -24/3
x = -8
x = -8 is your answer.
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The number of possible seats is an illustration of permutation
There are 1728 possible sitting arrangements
<h3>How to determine the number of seats</h3>
From the question, we have the following highlights:
- Chris can only take 1 seat (i.e. the central seat)
- Jo can take 2 seats (i.e. the seats adjacent the central seat)
- Alex, Barb and Dave can take 3! number of seats
- Eddie, Fred, and Gareth can take 3! number of seats on the right of Chris.
- The remaining 4 adults do not have preference, then they can seat in 4! ways
So, the number of sitting arrangement is:

Evaluate the product

Hence, there are 1728 possible sitting arrangements
Read more about permutation at:
brainly.com/question/12468032
 
        
             
        
        
        
Answer:
i think the answe is A and B hope this helps 
Step-by-step explanation:
Have a nice day!
 
        
                    
             
        
        
        
Answer: Present value = $7200
Step-by-step explanation: Given Principal that is the original amount is $6000
Rate is 10% every fourth year
But the total period is eight.
So the interest would be paid 8/4 = 2 times.
Therefore,
Simple interest 
= {principal * rate * no of times}/100
 = {$6000*10*2}/100
Simple interest = $1200
Present value 
= principal + Simple interest
= $6000 + $1200
= $7200.