A function will not have any repeating x values....it can have repeating y values, but all the x values have to be different for it to be a function.
A is a function because all the x values are a different number
B is not a function because u have repeating x values...u have repeating 4's and repeating 9's
        
             
        
        
        
Answer:
If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal. When you solve an equation, you find the value of the variable that makes the equation true. In order to solve the equation, you isolate the variable.
 
        
             
        
        
        
Answer: His checking account balance is $2,800.
Step-by-step explanation: What Hayden is doing is comparing his assets against his liabilities. This will determine his net worth. His assets ideally are those that increase his net worth such as landed properties, etc while his liabilities in the simplest language are those debts he is paying off either right away, or that he must pay off eventually.
In other words, to determine his net worth, Hayden has to add up all his assets and from the total derived, deduct his liabilities.
Consider the calculations below;
NET WORTH: $17,550
Add ASSETS  
                          Automobile               13600  
                          Retirement Account   6700 
                          Checking Account      XX
Less LIABILITIES
                           Student Loan            4800
                           Credit card debt          750
Net Worth                                            <u>17550</u>
The above table can be simplified as follows;
Net worth = Assets - Liabilities
17550 = 20300 + XX - 5550
Collecting like terms, you now have;
17550 -20300 +5550 = XX
2800 = XX
The Checking Account represented by XX is now calculated as $2,800 
 
        
             
        
        
        
Answer:
x=(2,-5.3)
Step-by-step explanation:
Hope this helps
 
        
             
        
        
        
Answer:
u= -3
Step-by-step explanation:Solve for 
u by simplifying both sides of the equation, then isolating the variable.