For this case we have the following polynomial:

The standard form of the polynomial is given by:

Where, the axis of symmetry of the polynomial is given by the expression:
 }
}
In this case we have:

Therefore, replacing values we have:

Rewriting we have:

Answer:
The symmetry axis of the polynomial is given by:

option C
 
        
             
        
        
        
Answer:
233.33 %.
Step-by-step explanation:
The increase is 10 - 3 = 7c.
Percentage increase =  100 * 7 / 3.
= 700 / 3
=  233.33 %.
 
        
             
        
        
        
<h3>
Answer:  x = 29</h3>
======================================================
Work Shown:
x+61 = 90
x+61-61 = 90-61
x = 29
------------
Explanation:
- The first step is valid because the two angles x and 61 are complementary angles. They form a right angle or 90 degree angle.
- In the second step, I subtracted 61 from both sides to undo the "+61".
 
        
        
        
 
2 6/7 ÷ 2/3
= 20/7 ÷ 2/3
20/7 × 3/2
= 60/14
reduce to it's lowest term
30/7 = 4 2/7