It would be 1/8. 2 to the third is 8, and all three answers correct is one option.
        
                    
             
        
        
        
Answer:
.214 if it is to 3 decimal places.
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
a = 2 and b= 3
(a + b)2
(2 + 3)2
10
 
        
             
        
        
        
4s+7a=861
s+a=168
This can be solved using either elimination or substitution. I am going to use substitution. 
Solve s+a=168 for s
s=168-a
Replace 168-a for s in 4s+7a=861
4(168-a)+7a=861
672-4a+7a=861
Solve for a
672+3a=861
3a=189
a=63
Substitute 63 for a in s=168-a
s=168-63=105
So, s=105 student tickets and a=63 adult tickets
        
             
        
        
        
Solution:
Since the graph passes through the given points, (7, 20) & (-2, 11) are the solutions of the given equation <em>y = x + ?</em>.
⇒<em>(x, y)</em> = (7, 20); (-2, 11)
Substituting the variables with (7, 20),
20 = 7 + <em>?</em>
20 - 7 = <em>?</em>
<em>?</em> = 13
Similarly,
11 = -2 +  <em>?</em>
<em>?</em> = 13
∴ <em>y</em> = 13