Answer:
12
Step-by-step explanation:
 
        
             
        
        
        
The expression for (r-s)(x) is found by subtracting s from r.  That difference is 

.  The expression for (r+s)(x) is found by adding them, which is 

.  Now we are told to evaluate (r*s)(x) which means they want us to multiply those and state the "new" expression that results.  

.  There you go!
 
        
        
        
Answer:
please give me brainlist and follow
Step-by-step explanation:
You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the cause, while a dependent variable is the effect. In an experiment, you manipulate the independent variable and measure the outcome in the dependent variable.
 
        
             
        
        
        
250 in the account 
3%x7=21%
0.21 times 250 = 52.5
250 + 52.5 = 302.5
        
             
        
        
        
Answer:
If ‘A’ can finish a work in ‘n’ days then part of work finished in 1 day 
will be  .
.
Step-by-step explanation:
From the question, it is clear that
- If ‘A’ can finish a work in ‘n’ days, then 
- we have to determine the part of work finished in 1 day.
So
let ' ' be the number of days
' be the number of days  takes to complete the whole work
 takes to complete the whole work
Let the whole job be denoted as ' '
'
Thus, the part of work finished in 1 day will be:
                       
Therefore, If ‘A’ can finish a work in ‘n’ days then part of work finished in 1 day will be  .
.
                              
Keywords: work, word problem
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