Answer:
6.84 ≤ x ≤ 37.39
Step-by-step explanation:
we have
 -----> equation A
 -----> equation A
we know that
The company wants to keep its profits at or above $225,000,
so
 -----> inequality B
 -----> inequality B 
Remember that P(x) is in thousands of dollars
Solve the system by graphing
using a graphing tool
The solution is the interval [6.78,39.22]
see the attached figure
therefore
A reasonable constraint for the model is
6.84 ≤ x ≤ 37.39
 
        
                    
             
        
        
        
8÷2/7
8/1÷2/7
8/1*7/2
56/2
28
Hope this helps :)
        
             
        
        
        
 
The Answer is B. 
Its a Cubic function and this does not graph a line.
The first option 
y=5 (A straight line)
for Y=-8x
Using Y=Mx + c 
M is the slope 
So it has a slope of -8. 
 
        
             
        
        
        
Answer:b=5
Step-by-step explanation:the formular for pythagoras theory is 
C^2=a^2+b^2
13^2=12^2+b^2
169=144+b^2
Collect like terms 
169-144=b^2
b^2=25
Take the the square root of both sides 
b=square root of 25 
b=5