Answer:
4.17%
Step-by-step explanation:
Rate = interest earned / (principal x time) 
70 / (4 x 420) = = 0.0417 = 4.17%
 
        
             
        
        
        
No solutions, I don’t think there’re any solutions
        
                    
             
        
        
        
A. 1-255255/29012901=0.991202017 is the probability of not making an obscene gesture.
b. The probability of none of 5050 making an obscene gesture is (a) raised to the power of 5050: 4.1591E-20 approx. We have not used the 5% rule in this binomial distribution.
        
             
        
        
        
18 would have to be the mean because of the average