Answer:
The number of cards Frank has is 18 and the number of cards his friend has is 24.
Step-by-step explanation:
<u><em>The correct question is </em></u>
Two friends are collecting cards. Frank has 6 more than half the number of cards as his friend. Together they have 42 cards. How many cards does each friend have?
Let
x ----> the number of cards that Frank has
y ----> the number of cards that his friend has
we know that
Together they have 42 cards
 ----> equation A
 ----> equation A
Frank has 6 more than half the number of cards as his friend
 ---> equation B
 ---> equation B
Solve the system by substitution    
Substitute equation B in equation A

solve for y

<em>Find the value of x</em>

therefore
The number of cards Frank has is 18 and the number of cards his friend has is 24.
 
        
             
        
        
        
Answer:
y = |x| + 7
Step-by-step explanation:
Use desmos.com to see it in action
 
        
                    
             
        
        
        
Step-by-step explanation:
easy union means all the element from small to big
 
        
             
        
        
        

The equation above is the intercept form. Both a-term and b-term are the roots of equation. 

These are the roots of equation. Therefore we substitute a = - 1/3 and b = 5 in the equation.

Here we can convert the expression x+1/3 to this. 

Rewrite the equation. 

Simplify by multiplying both expressions.

<u>Answer</u><u> </u><u>Check</u>
Substitute the given roots in the equation. 


The equation is true for both roots. 
<u>Answer</u>

 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
Given
x - 9 > 3 ( add 9 to both sides )
x > 12
13, 15 and 17 are all greater than 12
However, 11 is less than 12 and is not in the solution set → A