The second leftover expression is not o(a+b). It is 6(a + b). I have attached the correct question to depict that. 
Answer:
The equivalent expressions are;
8a + 2 and 6a + 6b
Step-by-step explanation:
The two leftover expressions are given as;
2(4x + 1) and 6(a + b)
In algebra, equivalent expressions are simply those expressions which when simplified, give the same resulting expression as the initial one. 
Thus simply means expanding or collecting like times to make it clearer. 
Now, in our question, like terms have already been collected. This means that to find an equivalent expression, we will just expand the bracket. 
Thus;
2(4x + 1) will be expanded by using the 2 outside the bracket to multiply the terms inside the bracket. This gives;
8x + 2
Similarly, 
6(a + b) will be expanded by using the 2 outside the bracket to multiply the terms inside the bracket. This gives;
6a + 6b
Thus;
The equivalent expressions are;
8a + 2 and 6a + 6b
 
        
             
        
        
        
Answer:
The graph is not a line of best fit as there are not an equal number of data points on each side of the line
Step-by-step explanation:
Brainliest would be appreciated
 
        
             
        
        
        
Answer:
The exponential model is  .
.
Step-by-step explanation:
The exponential model can be modelled by the following mathematical expression:
 (1)
 (1)
Where:
 - Independent variable.
 - Independent variable.
 - Dependent variable.
 - Dependent variable.
 - Coefficients.
 - Coefficients.
If we know that  and
 and  , then we get the following system of equations:
, then we get the following system of equations:
 (2)
 (2)
 (3)
 (3)
If we divide (3) by (2), we calculate the value of  :
:



And by (2), we determine the value of  :
:


The exponential model is  .
.
 
        
             
        
        
        
Answer:
1.70
5.35
2.135
6..56
3.150
7.36
4.41
8.134
pls mark me as brainliest.i would really appreciate that.Tq
 
        
                    
             
        
        
        
Answer:
352x^2
Step-by-step explanation:
40\times 1.25x\times 2.20x\times 3.2040×1.25x×2.20x×3.20
(40)1.25x2.20x3.20
+	−	.  	ln	>	<
×	÷	/  	log	≥	≤
(	)    logx	=	%
1 Take out the constants.
(40\times 1.25\times 2.20\times 3.20)xx(40×1.25×2.20×3.20)xx
2 Simplify  40\times 1.2540×1.25  to  5050.
(50\times 2.20\times 3.20)xx(50×2.20×3.20)xx
3 Simplify  50\times 2.2050×2.20  to  110110.
(110\times 3.20)xx(110×3.20)xx
4 Simplify  110\times 3.20110×3.20  to  352352.
352xx352xx
5 Use Product Rule: {x}^{a}{x}^{b}={x}^{a+b}x
a
 x
b
 =x
a+b
 .
352{x}^{2}352x
2
  
Done