<span>Round 0.30 each (or $1.80 for all 6 of them), the milk is
$1.30. Total of estimates is $11.10 
 
 The customer gave you 5 + 6 + 0.25 or $11.25, which is very close
(and slightly higher) than the total of your estimates. I'd guess the
register is correct. 
 
Actual value is $8.04 + 6*0.29 + 1.31 = 8.04 + 1.74 + 1.31 = $11.09. The register is definitely correct. </span>
        
             
        
        
        
A=4B
2A/100 +3B/100=1210
8B/100+3B/100=1210
11B=121000
B=11000
A=44000
        
             
        
        
        
Answer:
(- 2, - 4 )
Step-by-step explanation:
The x- coordinate of the vertex is calculated as
x = - 
g(x) = x² + 4x
with a = 1, b = 4 , then
x = -  = - 2
 = - 2
Substitute x = - 2 into g(x) for corresponding y- coordinate
g(- 2) = (- 2)² + 4(- 2) = 4 - 8 = - 4
vertex = (- 2, - 4 )