we know that Bob can do the whole job in 14 hours, how much of the work has he done in 1 hour only?  well since he can do the whole lot in 14 hours in 1 hour he has only done 1/14 th of the job.
we know that James can do it in 18 hours, a bit slower, so in 1 hour he has done only 1/18 th of the job.
let's say it takes both of them working together say "t" hours, so in 1 hour Bob has done (1/14) of the work whilst James has done (1/18) of the work, the whole work being t/t or 1 whole, so for just one hour that'd 1/t done by both Bob and James.

 
        
             
        
        
        
Your answer is A 
It cannot be C because the line y > -2  uses the (>) greater than symbol. 
When equations have a greater than symbol, they are graphed using a <u>dotted line. </u>
It cannot be D because the line is  y ≤ - l x-1 l 
with the less than or equal to sign (≤) , you use a <u>solid line</u> to graph 
With the<u> greater than</u> symbol for y > -2 , the shaded region must be <em>above </em>this line. 
With the <em>less than </em>or equal to sign in y ≤ - l x-1 l , the shaded region must be <em>below </em>the line. 
Hope I helped - message me if you have any questions :) 
 
        
             
        
        
        
No it is missing 10 yards in length
        
             
        
        
        
There is 20% decrease in the number of members.
Step-by-step explanation:
Given, 
Members last year = Old value = 30 
Members this year = New year = 24 
Change = New value - Old value 
Change = 24 - 30 
Change = -6 
The negative sign indicates the decrease.
Decrease percent = 
Decrease percent = 
Decrease percent = 
Decrease percent = 20% 
There is 20% decrease in the number of members.
Keywords: percentage, division 
Learn more about division at:
#LearnwithBrainly