Answer:

the charge is $5 dollars per mile
Step-by-step explanation:
He truck is rented at $40 per day plus they charge per mile of use the truck travel 15 miles in one day and the total charge was 115
LEt x  be  the charge in dollars per hour
Initial charge is 40 and 15 miles travelled  in one day
total charge = 15x + 40 
Given : total charge is 115
So the equation becomes 

Now we solve for x
Subtract 40 from both sides

Divide both sides by 15
x= 5
so , the charge is $5 dollars per mile
 
        
                    
             
        
        
        
A
This is like a base form of a prime polynomial 
X^2+x+1
        
                    
             
        
        
        
Answer:

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)
Step-by-step explanation:
we have
 ----> equation A
 ----> equation A
 -----> equation B
 -----> equation B
solve by substitution
substitute equation B in equation A

solve for x




<em>Find the value of y</em>
 
 
For  ---->
 ---->  
 
For  ---->
 ---->  
 
therefore
The solutions are 

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)
 
        
                    
             
        
        
        
The time spent by the repairman there will be 3 hours so the correct answer is option D.
<h3>What is an expression?</h3>
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Given that:-
A roof repairman charges a $60 consult fee, and then $45 per hour to complete repairs. if the homeowner pays a total of $195.
The time will be calculated as:-
Total amount =  $195
Now the fixed consulting cost will be $60 and will be deducted from the 
total amount.
Variable cost = 195 - 60 = 135
The $45 per hour charge so for $145 the time will be:-
Time = 135 / 45
Time =  3 Hours 
Therefore the time spent by the repairman there will be 3 hours so the correct answer is option D.
To know more about relations follow
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Answer:
5444545645645
Step-by-step explanation:
567456454351