Answer: 4
Step-by-step explanation:
 
        
                    
             
        
        
        
F(x) = 4.25x + 50
for 6 hrs....x = 6
f(6) = 4.25(6) + 50
f(6) = 25.50 + 50
f(6) = 75.50 <==
        
             
        
        
        
Answer:
 (Your answer choices were really confusing, so I just put the plain answer)
(Your answer choices were really confusing, so I just put the plain answer)
Step-by-step explanation:
To find the slope of a line with just two points, we can use the formula  . In this case,
. In this case,  . This is
. This is  . This reduces to
. This reduces to 
 
        
             
        
        
        
Convert your percent to a decimal: .24 
Multiply your cost and decimal 
300 * .24 = 72 
Subtract
300-72 = 228
        
                    
             
        
        
        
Assuming that the lengths are all the same, which they are usually regulated by federal law, the space will be the area (l x w)