Answer-
The exponential model best fits the data set.
Solution-
x = input variable = number of practice throws
y = output variable =  number of free throws
Using Excel, Linear, Quadratic and Exponential regression model were generated.
The best fit equation and co-efficient of determination R² are as follows,
Linear Regression  
Quadratic Regression
Exponential Regression
The value of co-efficient of determination R² ranges from 0 to 1, the more closer its value to 1 the better the regression model is.
Now,
Therefore, the Exponential Regression model must be followed.
 
        
             
        
        
        
Answer:
l >= 60
Step-by-step explanation:
l greater than or equal to 60
 
        
                    
             
        
        
        
Option B model shows the percent of beads that are blue.
Solution:
Fraction of beads blue = 
To convert it into percent multiply the fraction by 100.

                      
Cancel the common factors, we get
                     = 20%
                     
This means total number of boxes 100 and shaded in blue color 20.
Therefore option 2 represents  .
.
Hence option B model shows the percent of beads that are blue.
 
        
             
        
        
        
Answer:
The length of one side of the square is 3.
Step-by-step explanation:
The perimeter of any given shape is all of the sides added together. So, the perimeter of the triangle is 5x + 4x + 3x. Added together, 12x.
The perimeter of the square is (x + 2)*4. Distributed, it's 4x + 8. Since we know they're equal, set it up like this:
12x = 4x + 8
You then find that x = 1. Plug that into one side of the square, x + 2, to get 3.