f(x) = log2 x
f(40) = log2 40 
40 = 2^y
2^5 = 32 and 2^6 = 64
so f(40) lies between  integers 5 and 6.
 
        
             
        
        
        
By substitution, the solution of the system of equations, 4x + 2y = 7 and y = 5x, is (1/2 , 5/2).
A system of linear equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy both equations.
There are three methods that can be used to solve system of linear equations.
1. Elimination
2. Substitution
3. Graphing
Using substitution method, given two linear equations in x and y,
4x + 2y = 7     (equation 1)
y = 5x     (equation 2)
Since the second equation is already expressed in y in terms of x, substitute the second equation to the first equation.
4x + 2y = 7     (equation 1)
4x + 2(5x) = 7
4x + 10x = 7
Combining all terms containing the variable x on one side and the constants on the other side of the equality, and solving for x.
4x + 10x = 7
14x = 7
x = 1/2
Substitute the value of x in the second equation and solve for y.
y = 5x
y = 5(1/2)
y = 5/2
Hence, the solution of the given system of equations is (1/2 , 5/2).
To learn more about solving systems of equations: brainly.com/question/25869125
#SPJ4
 
        
             
        
        
        
Answer:
That would mean for every 30 campers there are 2 counselors and 45:3,60:4 and so on
Step-by-step explanation:
 
        
             
        
        
        
14 - 12 = 2 dollars left over to buy containers. They each got one container each.
        
                    
             
        
        
        
Please, Karla, explain what "C" and "n" represent.  Are you talking about combinations (for example, n+2 objects taken n at a time?  Or is C some kind of function?  I don't quite see the relationship of this problem to 'data management.'