Answer:
a
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
0.0274
Step-by-step explanation:
The mean is  and the standard deviation is
 and the standard deviation is 
Calculate 
 
 
for 
 
 
If  then
 then 
and

Use table for normal distribution probabilities to get that
 
 
        
                    
             
        
        
        
Answer:
$6725
Step-by-step explanation:
Given data
Princiapal= $5000
Rate=2.3%
Time= 15years
The function that will model this situation is given as
A=P(1+rt)
The above function is a simple interest function
Substitute our data we can find the amount A
A=5000(1+0.023*15)
A= 5000(1+0.345)
A=5000(1.345)
A=5000*1.345
A=$6725
Hence the value of the investment after 15 years is $6725
 
        
             
        
        
        
The answer would be -2! :)
        
             
        
        
        
Answer:
Value of the independent variable = 25 
Step-by-step explanation:
y-intercept form of a straight line is represented by the equation,
y = mx + b
here y = dependent variable 
         m = slope 
         b = y intercept or vertical intercept
         x = independent variable
In our question,
y-intercept 'b' = 150
slope of the line 'm' = 4
dependent variable y = 250
We will plug in these values in the equation of the line to get the value of the independent variable.
250 = 4x + 150
250 - 150 = 4x 
x = 
x = 25
Therefore, value of the independent variable is 25.