Answer: 3j +4 
3(j)+ 3(2) = 3j+ 6 - 2 = 3j +4 
Hope this helps
        
                    
             
        
        
        
<h3>
Answer:  120</h3>
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Explanation:
There are 5 choices for the first selection, 4 choices for the second, etc etc until we reach 1 for the last selection. We have the countdown {5,4,3,2,1}. We'll multiply those values together to get our answer.
5*4*3*2*1 = 120
This operation of starting with some integer, counting down and multiplying along the way, is done so very often that it's given a name which is "factorial". The shorthand notation is to use an exclamation mark. So we'd say 5! = 120
 
        
        
        
Answer:
 6 dm
Step-by-step explanation:
Triangle DBE is similar to triangle ABC, so their side lengths are proportional.
 DE/AC = DB/AB
The length of DB can be found from ...
 DB +AD = AB
 DB = AB -AD = (15 -10) dm = 5 dm
So, we can fill in the proportion:
 DE/(18 dm) = (5 dm)/(15 dm)
 DE = (18 dm)·(1/3) . . . . . . . . . . simplify, multiply by 18 dm
 DE = 6 dm
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It can be helpful to draw and label a figure.