Answer:
maybe the third one and i would also like to see the box plot
Step-by-step explanation:
 
        
             
        
        
        
Answer:
(64,000x^3+15,625)(4,096x^2-25)
Step-by-step explanation:
(40x + 25)^3 (64x^2 - 25)
= (64,000x^3+15,625)(4,096x^2-25)
 
        
             
        
        
        
Answer:
15% above the trend.
Step-by-step explanation:
A time series represented by Y comprises of dataset observed over a particular period of time. Time series is handy in determining the future of a particular business. 
In a multiplicative model, if the seasonal factor is 1.15 for a particular season, then we expect that the time series in that season would be
Y = T × C × S × 1
where;
Seasonal S = 1.15
As such Y would increase by 15% above the trend if all other things are being equal.
 
        
             
        
        
        
I believe the correct answer is C
        
                    
             
        
        
        
The answer is 1690. First find
the amount of interest by a single investment by multiplying the investment
amount by the percent interest in decimal form. Then calculate the total by
adding up all the products of investment times interest. Matrices will allow to
multiply two things together and add the products up all at the same time. So
we need to find the investment matrix and interest matrix.
Investment matrix A (transposed)            = (a1 a2 a3) = (13,000 12,000 4,000) 
Interest Matrix B                                       = (b1
b2 b3) = (0.05 0.06 0.08)
Amount of interest earned                        = a1b1 + a2b2 + a3b3
Amount of interest earned                        = (0.05) (13,000) + (0.06)
(12,000) +                                                                                  (0.08)(4,000)
Amount of interest earned                        = 1690