Answer:
33% of 279 is equivalent to multiplying them: 33% × 279.
Step-by-step explanation:
 
        
             
        
        
        
 $47.50
Step-by-step explanation:
Before tax proce is $72.29 
sales tax is 9.5%= $6.87
$72.29+$6.87=$79.16
40% off of $79.16=$47.50
 
        
             
        
        
        
First let's rewrite it...
18a^2 + 20a + 8
Factor out a 2
2 (9a^2 + 10a + 4)
        
             
        
        
        
Do you notice anything strange about those points ?
(0, 1),  
(1, 2),  
 (2, 4),
(3, 8).
The y-coordinate of each point is (2) raised to the  power of the x-coordinate.
First point:       x=0,  y=2⁰ = 1
Second point: x=1,  y=2¹ = 2
Third point:      x=2,  y=2² = 4
Fourth point:    x=3,  y=2³ = 8 
The equation of the curve appears to be
                               y = 2 ^ x .
So, after 10 hours,  x=10, and  y = 2¹⁰ = 1,024 .