Answer:
-3mn
Step-by-step explanation:
It seems you might be missing some of the question, as you haven't given what m and n are equal to. 
If the question has just given you x, then you would simply just simplify it to get -3mn. 
 
        
                    
             
        
        
        
Answer:
1
Step-by-step explanation:
3-1=2
2-1=1
1-1=0
From this we can see that the constant rate of change is 1.
Hope it helps <3
 
        
             
        
        
        
Multiply (2.6 x 10^-7) by 15 to get
3.9 x 10^-6
        
             
        
        
        
Answer:
A.The probability that exactly six of Nate's dates are women who prefer surgeons is 0.183.
B. The probability that at least 10 of Nate's dates are women who prefer surgeons is 0.0713.
C. The expected value of X is 6.75, and the standard deviation of X is 2.17.
Step-by-step explanation:
The appropiate distribution to us in this model is the binomial distribution, as there is a sample size of n=25 "trials" with probability p=0.25 of success.
With these parameters, the probability that exactly k dates are women who prefer surgeons can be calculated as:

A. P(x=6)

B. P(x≥10)




C. The expected value (mean) and standard deviation of this binomial distribution can be calculated as: 

 
        
             
        
        
        
Step-by-step explanation:
Let original price be x
Price after 40% discount is $201
Therefore
x × 40% = $201
x = 201 ÷ (40/100)
x = 502.5
Therefore, the original price is $502.5
Hope it helps :)