He didn’t multiply the equation by 1/2 in the second part so it threw his whole answer off. Hope this helps
        
             
        
        
        
14.4 is your answer for y
        
             
        
        
        
Answer:
One solution.
Step-by-step explanation:
3(x + 9) = 2x + 54
3x + 27 = 2x + 54
3x + 27 - 2x = 2x + 54 - 2x
x + 27 = 54
x + 27 - 27 = 54 - 27
x = 27
 
        
             
        
        
        
Answer:
1 - c
2 - A
Step-by-step explanation:
Hey There!
So for the first one we are given the dimensions of a rectangular prism and they want us to find the volume 
Remember to find the volume we use the equation 
V = length x width x height 
so we just plug in the values 
v = 2.6 x 2.1 x 3.9 = 21.294
the closest is 20 so C is your answer 
For the second one we are given a triangular prism 
and they want us to find the volume 

b = base (10.3)
l = length (4)
h = height (7)
7x4=28
28x10.3=288.4
then we divide by 2
288.4/2=144.2
so your selected answer is correct 
 
        
             
        
        
        
No reason, or no evidence to support your claim/proof