Answer:
245 miles per hour 
Step-by-step explanation:
1470 divided by 6
 
        
             
        
        
        
The first option is the correct answer
 
        
             
        
        
        
Answer:
24x - 103
Step-by-step explanation:
calculate 24x +18- 121
 
        
             
        
        
        
No it is not, the square root is 8.3
        
             
        
        
        
Answer:
 f'(x)=-(x+42)/5
Step-by-step explanation:
Rewrite f(x) as y:
y=-5x-42
Flip x and y and solve for y:
x=-5y-42
x+42=-5y
(x+42)/-5=y
So the inverse function is f'(x)=-(x+42)/5 (note that f' means inverse)