Answer:
C, 6
Step-by-step explanation:
31-13 is 18, 18/3 is 6.
 
        
                    
             
        
        
        
Answer:
<h2>B. 243</h2><h2 />
Step-by-step explanation:
F(x) = 3^x 
then
F(5) = 3^5 = 3×3×3×3×3 =243
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
let f(x) = y and rearrange making x the subject
y =  ( multiply both sides by 7 to clear the fraction )
 ( multiply both sides by 7 to clear the fraction )
7y = x + 2 ( subtract 2 from both sides )
7y - 2 = x
Change y back into terms of x with x the inverse function, that is
p(x) = 7x - 2
 
        
                    
             
        
        
        
Answer:
< 1 = 125 degrees
< 2 = 55 degrees
< 3 = 125 degrees
< 4 = 55 degrees 
< 5 = 125 degrees
< 6 = 55 degrees 
< 7 = 125 degrees (given)
< 8 = 55 degrees
Step-by-step explanation:
1 and 3 are equal because they are vertical angles, therefore proving their congruence. 
7 and 1 are equal because they're alternate exterior angles, which are congruent. 
2 and 4 are vertical, which is congruent. 
5 and 7 are vertical. 
6 and 8 are vertical. 
 
        
             
        
        
        
Let  denote the <em>k</em>th term of the sequence. Then
 denote the <em>k</em>th term of the sequence. Then

where <em>d</em> is the common difference between consecutive terms in the sequence and <em>a</em>₁ is the first term.
The sum of the first <em>n</em> terms is

From the formula for  , we get
, we get




So we have  , and
, and  so that
 so that  .
.
Then the <em>n</em>th term in the sequence is
