For any point reflected in the y- axis
(x, y ) → (- x, y )
A(1, 1) → A'(- 1, 1)
B(5, 1 ) → B'(- 5, 1 )
C(3, 3 ) → C'(- 3, 3 )
 
        
             
        
        
        
Answer:
1. 50 degrees.
2. 90 degrees
3. 50 degrees
Step-by-step explanation:
hope this helps!
 
        
             
        
        
        
Answer:
Chocolate chip dough = $12
Gingerbread cookie dough = $17
Step-by-step explanation:
Since there are two variables in this problem, setting up a system of equations and using the elimination method will help us find the cost for each package of cookie dough.  Based on Ryan's sales of 6 packages of chocolate chip and 12 packages of gingerbread for $276, the first equation is: 
6c + 12g = 276 
Since Shawna sold 8 chocolate chip and 3 gingerbread for a total of $147.00, the second equation is: 
8c + 3g = 147
Using the elimination method, we will need to multiply the second equation by a factor of -4 in order to eliminate the variable 'g': 
-4(8c + 3g = 147) = -32c - 12g = -588 
Add the two equations: 
6c + 12g = 276
+ <u> -32c - 12g = -588</u>
-26c = -312  or c = $12 
Plug the value of 'c' into the first equation: 
6(12) + 12g = 276 or 72 + 12g = 276 or g = $17