The answer is:  [A]:  2.912   .
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Answer:
1. option B is correct i.e., 
2. option D is correct i.e., 
.
3. option B is correct i.e.,  
.
Step-by-step explanation:
1. Since the given equation is:

As we know that 
So, the given equation can be represented as:

2. Given equation is:

As we know that 
so the given equation can be represented as:
.
3.  Given equation is:

by using the properties 
,
and 

= 
= 
= 
= 
= 
.
which is option B.
 
        
                    
             
        
        
        
The average would be -3. You add all the low temps up and get -15 then you divide it by the amount which was 5 temps... And get -3. 
 
        
             
        
        
        
Answer:
2 hours, 15 minutes 
B. 
Step-by-step explanation:
3:30 to 5:30 is 2 hours elapsed time. 
5:30 to 5:45 is 15 minutes elapsed time. 
2 hrs + 15 mins =2 hrs 15 mins. 
 
        
                    
             
        
        
        
Answer:
The slope is <u>steeper</u> and the line is shifted <u>flatter</u>.
Step-by-step explanation:
I have provided a graph to help illustrate the relationship between these two lines, (The red line is line A which is y = 2x + 4, and the blue line is line B which is y = 4x + 9).
As you can see, the slope does determine the steepness of the lines. This means that line A's slope is going up 2 units and over to the right 1 unit, whereas line B's slope is going up 4 units and to the right 1.
Therefore, if line A is to transform into line B, then its slope will be steeper.
Hope this helps you :)
Also, P.S. I don't know if there are supposed to be more options, so I apologize if flatter does not belong in the second box.