-19 
Explanation: they go back in intervals of -3
        
             
        
        
        
It will take Mr. Jenkins 1 hr and 20 minutes to cut all the grass.
To know how long it will take Mr. Jenkins to cut all the grass, get the total area of the lawn and divide it by the rate Mr. Jenkins cut the grass.
The area of the lawn can be calculated using the formula for the area of a rectangle given by:
A = l x w
where l is the length and w is the width.
Using this formula, the grass lawn that is 24 m wide and 30 m long has an area of:
A = l x w
where 
l = 30 m
w = 24 m
A = 30 m x 24 m
A = 720 m^2
Meanwhile, the time it will take Mr. Jenkins to cut the grass lawn with an area of 720 m^2 can be computed using the rate.
amount = rate x time
720 m^2 = 9 m^2/minute x t
t = 720 / 9
t = 80 minutes = 1 hr 20 minutes
To know more about rate, visit brainly.com/question/24950565.
#SPJ4
 
        
             
        
        
        
3x-14=4x-9
-4x     -4x
-x-14=-9
   -14  -14
-x=-15
-x/-1=-15/-1
x=15
Sorry if this is a bit confusing, but I hope I helped
        
             
        
        
        
Answer:
9.375
Step-by-step explanation:
150 divided by 9.375 gives you 16
 
        
                    
             
        
        
        
Answer:
-1.8m + 0.7
Step-by-step explanation: