A) x * y = 12
B) x + y = -7
A) x = 12 / y
Substitute this into B
B) 12/y + y = -7
multiplying both sides by "y"
12 + y^2 = -7y
y^2 + 7y + 12 = 0
y = -4
and from equation B we calculate x as -3
        
             
        
        
        
5t=45
45/5=9
The answer is C 
Hope I helped
        
             
        
        
        
2x+13
X= a number 
2(a number) + 13
Thank you!
        
                    
             
        
        
        
Answer:
part 1 of the question is d ,and part 2 of the question is b.
 
        
                    
             
        
        
        
Answer:
$11.5
Step-by-step explanation:
Add all of them together