Answer: $80.44
Step-by-step explanation:
First of all, find 20% of 78.86, which is approximately 15.77. 
Then, add it to the cost of the meal. 
Finally, discount 15% of 94.63, which is approximately $14.19, and then subtract it from $94.63, and there's your answer. 
 
        
             
        
        
        
Answer:
A and C
Step-by-step explanation:
solving the equations
A
x² - 4 = 0 ( add 4 to both sides )
x² = 4 ( take square root of both sides )
x = ±  = ± 2 ← required solution
 = ± 2 ← required solution
B
x² = - 4 ← has no real solutions
C
4x² = 16 ( divide both sides by 4 )
x² = 4 ( take square root of both sides )
x = ±  = ± 2 ← required solution
 = ± 2 ← required solution
D
2(x - 2)² = 0 , then
x- 2 = 0 ( add 2 to both sides )
x = 2 ← not the required solution
 
 
        
                    
             
        
        
        
Answer:
1) difference of squares, then its factors are (x+4)(x+2)
2) 3 (x+4)/2 (x-4)(x+4)
 3/2 (x-4)
3) 3x+11/5x-9
 
        
             
        
        
        
Answer:
28 dollars is the new price.
Step-by-step explanation: