Answer:
the answer is 9 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
The  straight line equation is:
y = m*x  + b     Where m is the slope of the line and b the intercept with   y-axis, in our case y is the depth of the tank and x (time in lapsus of 3 hours).
The slope m  =  ( y₂ -  y₁ ) / (x₂ - x₁)
We have point  A ( 3 , 8 )  and point  B ( 6 , 7 )
m  = ( 6 - 3 ) / (7 - 8 )  m = -3
We see that  each 3 hours time-depth decreases  1 in.
Then   to find the depth at the beginning of x-axis
At  noon     12   tank was  9 inches, three hours before at 9 in the morning the depth was 10 inches and:
9  in the morning   10
6  in the morning   11
3  in the midnight   12
12 in the night         13
Then 13 is the intercept with y-axis
then the equation is:
h = - 3*x + 13
Note x is time in lapsus  of 3 hours
 
        
             
        
        
        
Answer:
The first graph best represent the given scenario. 
Step-by-step explanation:
Given that Kent walked to the bus stop, then sat and waited until the bus arrived. He rode the bus for 25 minutes, then walked the last 3 blocks to work. we have to find which graph best represent the scenario.
In the first graph, it is given The line increases for 10 minutes means the distance as well as time increases i.e Kent walked for 10 minutes then, stays horizontal for 15 minutes means no distance covered i.e stop or wait for 15 minutes. After that graph increases rapidly for another 25 minutes, that means rode the bus for 25 minutes then increases slowly for 5 minutes indicate walked to work. 
The above graph best represent the scenario.
All three option is analysed by graphing which doesn't show the above given scenario. 
 
        
                    
             
        
        
        
Yes, it is. You may prove it using something like this: 1 is an integer. 1-1 is a difference between integers. A difference between integers returns an integer, so 0 is an integer.
 
        
             
        
        
        
Answer:
c
Step-by-step explanation: